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Red Hat Product Errata RHSA-2026:63537 - Security Advisory
Issued:
2026-09-04
Updated:
2026-09-04

RHSA-2026:63537 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel security update

Type/Severity

Security Advisory: Important

Red Hat Lightspeed patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: packet: use consistent hard_header_len in non-ring send paths ()

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture.

Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.

Affected Products

  • Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.8 x86_64
  • Red Hat Enterprise Linux Server - TUS 8.8 x86_64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64

Fixes

  • BZ - 2519475 - kernel: packet: use consistent hard_header_len in non-ring send paths

CVEs

  • CVE-2026-74582

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.8

SRPM
kernel-4.18.0-477.165.1.el8_8.src.rpm SHA-256: 1cdb0ff0444c2479e6935c7254046b1104c547205ccbcfdc2d8dadcb97a8d496
x86_64
bpftool-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: aad68be9084660372b7d54065b9a2b7936bc2898ae3a6c3fe5fc215d085ab244
bpftool-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c72e0e06fb9f3219705deae19712ee5a1b9a67b7a15746a9126a8173197baccf
kernel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 4611969fd1059aad6a7d101b9a8abd3920a70f4a97586efd0bf59a3a5bae78d2
kernel-abi-stablelists-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 3f7c430e907dd80d76d6de95ad2725786f3d32e3976bc31aa30c682b4670a64f
kernel-core-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 7783eea48a306bae7af9d468fb6781066054a18a40aee26d1110870b4c232079
kernel-cross-headers-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 80ef6189ca709696d3b3f88b122307889d5d32fc4a770c53949ee7d533d50032
kernel-debug-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 53a4d70799f8bd3853b01f49bb3323c0050a315c24a8736eef3b9d7144676695
kernel-debug-core-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 72966fb1db5c656a829609b0198e749f3a434e05bf4f3f4cb50963a3e98924f4
kernel-debug-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 44764f51c0a8f017be53742b8e6cf69442f2d9b682742c7394d762ddecd009b1
kernel-debug-devel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c6d5b0d33dbda80eb1b9e13e552c3cbc7acafd55a1c03d2bca0734eb5ae0b5ca
kernel-debug-modules-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c1ff049b782b01ae342784de6154c233f3e3b8c216a3e58872a7fab4e7475686
kernel-debug-modules-extra-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 6e871eca9289e9ecf69a2e5c6abaca1bc09bdbfb4b61535a72fff4e08e75d803
kernel-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: ca6d2105479ba73d587445f54400ea25ea79c645ff6c1e02305016063f1c048e
kernel-debuginfo-common-x86_64-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 9206c1526b19694d237b71a6aaa805103058f961ee1d1f9950aaf2fda38632cc
kernel-devel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: e75c1390d3ed2b16db8e3592dcb638b0fcbb6b662bfa5f1dd5596e5a154d3d28
kernel-doc-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 91a2ab47c6595dd06e846ef929bc12f837710a4211785c5bb9137812bfcb1f56
kernel-headers-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 13e7b55a86ffd5411576b932357961aed8881b1d20337da15d8c0a987f0f5761
kernel-modules-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 2476666181202017bd44f7f3c9fac06e89484b6ab04acfb540126bda12b300aa
kernel-modules-extra-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 38d5b14fcf5a615e4178869cf478eda9b3997d8babc6f8eb8b8b16610efbc795
kernel-tools-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: b45784581ba491814127518f4c436bfe66584ac66e49cde818f61aa2d826da1e
kernel-tools-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 801871bb99320c4fd2a1da87b25ed0d2dc192b8ddc7008a251b6a5cce8222f3d
kernel-tools-libs-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 7099c73619bbb8a0798f6c85b09489d168f51501e883462b9b8fd564fb0ba82e
perf-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 2d5bb7758fdb0d20335e50a8ceda561f0de63bbaf756baacff133d35c0fc686a
perf-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 6dc698e9bc53414c80da58249eb290699279ad756aea75b9bbfbc5a6ca72c0a2
python3-perf-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 8017fe0c33c925c081c4dd48719ef2123f0b80bd68277f5efa3ad1827a26d572
python3-perf-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: afc8037f4578b4166c963aa31c5e46d6b1166963dc5e449c0acc81d2d069da88

Red Hat Enterprise Linux Server - TUS 8.8

SRPM
kernel-4.18.0-477.165.1.el8_8.src.rpm SHA-256: 1cdb0ff0444c2479e6935c7254046b1104c547205ccbcfdc2d8dadcb97a8d496
x86_64
bpftool-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: aad68be9084660372b7d54065b9a2b7936bc2898ae3a6c3fe5fc215d085ab244
bpftool-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c72e0e06fb9f3219705deae19712ee5a1b9a67b7a15746a9126a8173197baccf
kernel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 4611969fd1059aad6a7d101b9a8abd3920a70f4a97586efd0bf59a3a5bae78d2
kernel-abi-stablelists-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 3f7c430e907dd80d76d6de95ad2725786f3d32e3976bc31aa30c682b4670a64f
kernel-core-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 7783eea48a306bae7af9d468fb6781066054a18a40aee26d1110870b4c232079
kernel-cross-headers-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 80ef6189ca709696d3b3f88b122307889d5d32fc4a770c53949ee7d533d50032
kernel-debug-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 53a4d70799f8bd3853b01f49bb3323c0050a315c24a8736eef3b9d7144676695
kernel-debug-core-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 72966fb1db5c656a829609b0198e749f3a434e05bf4f3f4cb50963a3e98924f4
kernel-debug-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 44764f51c0a8f017be53742b8e6cf69442f2d9b682742c7394d762ddecd009b1
kernel-debug-devel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c6d5b0d33dbda80eb1b9e13e552c3cbc7acafd55a1c03d2bca0734eb5ae0b5ca
kernel-debug-modules-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c1ff049b782b01ae342784de6154c233f3e3b8c216a3e58872a7fab4e7475686
kernel-debug-modules-extra-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 6e871eca9289e9ecf69a2e5c6abaca1bc09bdbfb4b61535a72fff4e08e75d803
kernel-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: ca6d2105479ba73d587445f54400ea25ea79c645ff6c1e02305016063f1c048e
kernel-debuginfo-common-x86_64-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 9206c1526b19694d237b71a6aaa805103058f961ee1d1f9950aaf2fda38632cc
kernel-devel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: e75c1390d3ed2b16db8e3592dcb638b0fcbb6b662bfa5f1dd5596e5a154d3d28
kernel-doc-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 91a2ab47c6595dd06e846ef929bc12f837710a4211785c5bb9137812bfcb1f56
kernel-headers-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 13e7b55a86ffd5411576b932357961aed8881b1d20337da15d8c0a987f0f5761
kernel-modules-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 2476666181202017bd44f7f3c9fac06e89484b6ab04acfb540126bda12b300aa
kernel-modules-extra-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 38d5b14fcf5a615e4178869cf478eda9b3997d8babc6f8eb8b8b16610efbc795
kernel-tools-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: b45784581ba491814127518f4c436bfe66584ac66e49cde818f61aa2d826da1e
kernel-tools-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 801871bb99320c4fd2a1da87b25ed0d2dc192b8ddc7008a251b6a5cce8222f3d
kernel-tools-libs-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 7099c73619bbb8a0798f6c85b09489d168f51501e883462b9b8fd564fb0ba82e
perf-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 2d5bb7758fdb0d20335e50a8ceda561f0de63bbaf756baacff133d35c0fc686a
perf-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 6dc698e9bc53414c80da58249eb290699279ad756aea75b9bbfbc5a6ca72c0a2
python3-perf-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 8017fe0c33c925c081c4dd48719ef2123f0b80bd68277f5efa3ad1827a26d572
python3-perf-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: afc8037f4578b4166c963aa31c5e46d6b1166963dc5e449c0acc81d2d069da88

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8

SRPM
kernel-4.18.0-477.165.1.el8_8.src.rpm SHA-256: 1cdb0ff0444c2479e6935c7254046b1104c547205ccbcfdc2d8dadcb97a8d496
ppc64le
bpftool-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 8f690109d5efdd280d6417dd11a9d8ec9fbd77b394879f14788488f000c7f2f6
bpftool-debuginfo-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 549fab4afead11f71254bec2035703e181f0e7e320da502e2a2d0dec18596086
kernel-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 4a88de711a8e0f0754e31f3f3212554c0f413aa3851f7d16292261972947150f
kernel-abi-stablelists-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 3f7c430e907dd80d76d6de95ad2725786f3d32e3976bc31aa30c682b4670a64f
kernel-core-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 0a366ec81dbb72aa0d979a22cf7c5927ce173d75e1823dfbcabbf6af7f044421
kernel-cross-headers-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 946b0e1d951bbbde8aa768347da6ac0915299418a9a0f93cc58aa7becb8ea131
kernel-debug-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 6637769862e6ee30a6dab6a719d984c3f4794d579557e771d95cc2a102b40f16
kernel-debug-core-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 7512abb2477ec7b63915e757f2d693490409399e4f5e1d5621d8a29c45a9f84d
kernel-debug-debuginfo-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: fed3bf6ae21af416cf45cb27bf274cd503a079bf6d83bdac36f0f8d1f220df58
kernel-debug-devel-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 2688b53cfb303933c4fa725708616e61f6cd30ce01825ccc011910442c72b0ab
kernel-debug-modules-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: d87fe30fe1fcf8885836ece487e5dea77799932aa50b9d0c6e9f637ed741b68d
kernel-debug-modules-extra-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 7be96b4c8298ef5713a9d1712459046ea26c46308b02104c45012b2c42c03d42
kernel-debuginfo-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 0ca2b967126c3936574974cdff1c3a42470f1028f73dafab5a62592396931d04
kernel-debuginfo-common-ppc64le-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 85a599d240502f03735727ce18ae41a1647572263fdeb8ba40d4b5c6feecd2f4
kernel-devel-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 5f32e8ca98e0913ff36ae1271c1ff2fae9c7ff2d99b7616005aa72ef0f7fe35b
kernel-doc-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 91a2ab47c6595dd06e846ef929bc12f837710a4211785c5bb9137812bfcb1f56
kernel-headers-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 01dae409d37bd3c8bc23c546a08d6b502810e3c4351e3c8a5f4fb4e87d402bba
kernel-modules-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 205d087b6e0c0f1028af7d8a5cdfa5a3946ba71dd0505bfc01b58c3e12349d4d
kernel-modules-extra-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 3bfd286e56e95f2e6f5814e7497d6d6d0457a6b35fac7f41777a2495ffd13452
kernel-tools-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: e96c4b374c9bd3a69132e56cb727fa4f08cbf19c8b697e45aea4116d7d5ed541
kernel-tools-debuginfo-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 9bade5bc72c7c84dfcdc5758d254c8ca77248238340ea51c3d672ae399f09e19
kernel-tools-libs-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 1adeedf4f111df2783c797b8926fd8101228462e4baa28cddfa3584bf5020018
perf-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 9b668c74b118947fd151656d1fba3859a3bd8bf38a8706c4bfe1424b8bfdc1fc
perf-debuginfo-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 5a15b11ad7fd61d0e7a5fdfde189327649445c36c512e2078a165f9c8f2d7b2a
python3-perf-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: c3e2ca40ff94254c30dbefc913ef8c90768dab7dbd49aee65d2251f9a364a659
python3-perf-debuginfo-4.18.0-477.165.1.el8_8.ppc64le.rpm SHA-256: 784de89ff9f4ab89bd9f2db9da6588c45bc0308b71535a7e61825aab8e79577c

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8

SRPM
kernel-4.18.0-477.165.1.el8_8.src.rpm SHA-256: 1cdb0ff0444c2479e6935c7254046b1104c547205ccbcfdc2d8dadcb97a8d496
x86_64
bpftool-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: aad68be9084660372b7d54065b9a2b7936bc2898ae3a6c3fe5fc215d085ab244
bpftool-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c72e0e06fb9f3219705deae19712ee5a1b9a67b7a15746a9126a8173197baccf
kernel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 4611969fd1059aad6a7d101b9a8abd3920a70f4a97586efd0bf59a3a5bae78d2
kernel-abi-stablelists-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 3f7c430e907dd80d76d6de95ad2725786f3d32e3976bc31aa30c682b4670a64f
kernel-core-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 7783eea48a306bae7af9d468fb6781066054a18a40aee26d1110870b4c232079
kernel-cross-headers-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 80ef6189ca709696d3b3f88b122307889d5d32fc4a770c53949ee7d533d50032
kernel-debug-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 53a4d70799f8bd3853b01f49bb3323c0050a315c24a8736eef3b9d7144676695
kernel-debug-core-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 72966fb1db5c656a829609b0198e749f3a434e05bf4f3f4cb50963a3e98924f4
kernel-debug-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 44764f51c0a8f017be53742b8e6cf69442f2d9b682742c7394d762ddecd009b1
kernel-debug-devel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c6d5b0d33dbda80eb1b9e13e552c3cbc7acafd55a1c03d2bca0734eb5ae0b5ca
kernel-debug-modules-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: c1ff049b782b01ae342784de6154c233f3e3b8c216a3e58872a7fab4e7475686
kernel-debug-modules-extra-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 6e871eca9289e9ecf69a2e5c6abaca1bc09bdbfb4b61535a72fff4e08e75d803
kernel-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: ca6d2105479ba73d587445f54400ea25ea79c645ff6c1e02305016063f1c048e
kernel-debuginfo-common-x86_64-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 9206c1526b19694d237b71a6aaa805103058f961ee1d1f9950aaf2fda38632cc
kernel-devel-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: e75c1390d3ed2b16db8e3592dcb638b0fcbb6b662bfa5f1dd5596e5a154d3d28
kernel-doc-4.18.0-477.165.1.el8_8.noarch.rpm SHA-256: 91a2ab47c6595dd06e846ef929bc12f837710a4211785c5bb9137812bfcb1f56
kernel-headers-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 13e7b55a86ffd5411576b932357961aed8881b1d20337da15d8c0a987f0f5761
kernel-modules-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 2476666181202017bd44f7f3c9fac06e89484b6ab04acfb540126bda12b300aa
kernel-modules-extra-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 38d5b14fcf5a615e4178869cf478eda9b3997d8babc6f8eb8b8b16610efbc795
kernel-tools-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: b45784581ba491814127518f4c436bfe66584ac66e49cde818f61aa2d826da1e
kernel-tools-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 801871bb99320c4fd2a1da87b25ed0d2dc192b8ddc7008a251b6a5cce8222f3d
kernel-tools-libs-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 7099c73619bbb8a0798f6c85b09489d168f51501e883462b9b8fd564fb0ba82e
perf-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 2d5bb7758fdb0d20335e50a8ceda561f0de63bbaf756baacff133d35c0fc686a
perf-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 6dc698e9bc53414c80da58249eb290699279ad756aea75b9bbfbc5a6ca72c0a2
python3-perf-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: 8017fe0c33c925c081c4dd48719ef2123f0b80bd68277f5efa3ad1827a26d572
python3-perf-debuginfo-4.18.0-477.165.1.el8_8.x86_64.rpm SHA-256: afc8037f4578b4166c963aa31c5e46d6b1166963dc5e449c0acc81d2d069da88

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