- Issued:
- 2026-07-01
- Updated:
- 2026-07-01
RHSA-2026:34362 - Security Advisory
Synopsis
Important: postgresql:12 security update
Type/Severity
Security Advisory: Important
Red Hat Lightspeed patch analysis
Identify and remediate systems affected by this advisory.
Topic
An update for the postgresql:12 module is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.
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
PostgreSQL is an advanced object-relational database management system (DBMS).
Security Fix(es):
- postgresql: PostgreSQL: Operating system account hijack via symlink following in pg_basebackup and pg_rewind (CVE-2026-6475)
- postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory (CVE-2026-6477)
- postgresql: PostgreSQL: Credential recovery via covert timing channel in MD5 password comparison (CVE-2026-6478)
- postgresql: integer overflow can cause an undersized allocation and an out-of-bounds write (CVE-2026-6473)
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:
Affected Products
- Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.4 x86_64
- Red Hat Enterprise Linux Server - AUS 8.4 x86_64
Fixes
- BZ - 2477439 - CVE-2026-6475 postgresql: PostgreSQL: Operating system account hijack via symlink following in pg_basebackup and pg_rewind
- BZ - 2477442 - CVE-2026-6477 postgresql: PostgreSQL libpq: Buffer overflow allows server superuser to overwrite client stack memory
- BZ - 2477447 - CVE-2026-6478 postgresql: PostgreSQL: Credential recovery via covert timing channel in MD5 password comparison
- BZ - 2477448 - CVE-2026-6473 postgresql: integer overflow can cause an undersized allocation and an out-of-bounds write
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 Update Support Extension 8.4
| SRPM | |
|---|---|
| pgaudit-1.4.0-6.module+el8.4.0+11288+c193d6d7.src.rpm | SHA-256: b03a38090ec961b4c6fe83ae8e373284f0576a5472251536dfb1d10916b31177 |
| postgres-decoderbufs-0.10.0-2.module+el8.4.0+11288+c193d6d7.src.rpm | SHA-256: 4a6ff774095320178b96a836d62d5db488a36d985f86c0df120df6bdffe444e1 |
| postgresql-12.22-1.module+el8.4.0+24442+74e4dc28.4.src.rpm | SHA-256: da5f2a33ed9fcf0c583cd74b5be34de541f1aa39824f676510d36c733e8b851f |
| x86_64 | |
| pgaudit-1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: 0bbd0a783d7399c0a70bace3f71bd9bc706d57cfbd5a92355253eac38ef71d64 |
| pgaudit-debuginfo-1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: 7ec70c2c12b53aa6aef901acc2c48655d7acc11b45db3a5a8728a4eff214a610 |
| pgaudit-debugsource-1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: efae4253c28d1d3774ef16406da959ed11d8dd45ba769426433fb7433cadee0c |
| postgres-decoderbufs-0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: a6b90b09552fcc2cc7778ea384a195d97850282bbab941aa1d37fd4c314d94ac |
| postgres-decoderbufs-debuginfo-0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: a30fa22fccb754620843adaba31b89c77e7c757cba5fc3707804b51190dd02ef |
| postgres-decoderbufs-debugsource-0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: 5def5e99e1ff1ae1444788ab565fcd9d0ba1b9bea1a1650c3302fdaca8585ec3 |
| postgresql-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 53129d6a2d7a43e354be675a607baf8c80a7ee3220cbf586c117f3d51a647bc4 |
| postgresql-contrib-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 62319bf0c48f74c1df87ebb6ddc69cc5cbce861d41f96822090350e8e9df4fa5 |
| postgresql-contrib-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: b910bb0792d1d3ec37d88c96e4474a400c2e1a6f4fcb916495b70c7f2bf1a003 |
| postgresql-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: f77ea3a79b442ad5b44c36816786b1b9b56efec4c748d7763729ac0b6fe7678f |
| postgresql-debugsource-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 7e3af9907a6c57b19f35ef36f20ebc7af49085c0ae32c9d7993dff582d76e8b7 |
| postgresql-docs-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 4ec70f84a351ad995aa7ae0f6c02c5059b00601ee7c83860d439aa6a527f130c |
| postgresql-docs-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 5ce2658c55aac2cbaf5c656f20e7a49cc5667ba8315173af58ef9a501b5aef40 |
| postgresql-plperl-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 78746a9dff34cc245b0e425e51c99795882144b3fd1fe28cf4955dadd1980e68 |
| postgresql-plperl-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 482c4cddb042d9f86a6d9f917e0590d7db628cdcabc9cfb41ea0378cd34eb5a8 |
| postgresql-plpython3-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 29b633c27233badf5c332b39d134c2712e1aef38fdec95decb2075ce65d71c95 |
| postgresql-plpython3-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 9e1d4e8574496c2d2b73fa4d660f7fd5e8e5b96c70d3d09897c301159a7711ca |
| postgresql-pltcl-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: c6b2fe78c96c0d2b70f52f7c7339dc9f701540dd7b4d70b5e75186b8f3b024ef |
| postgresql-pltcl-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 32cb8227fa43bd364835d9a334b5ba4551f495df04ad96739bce5c9c7439212c |
| postgresql-server-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 849c649a5b0b83e0b8e30105b6ba3c253478d697015463d40b7a1fe227829c97 |
| postgresql-server-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 6f0a4d7c525b90b5b138926823d8de0e7ae47ea9d03b1a0ba8d0dbb7df6fd228 |
| postgresql-server-devel-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 4212deb1c15a5d9cc7d4954237d6f034102c708820e7533540da54ae2dfebfca |
| postgresql-server-devel-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: e2b14eddb4ea07edd65405a28262a2b3db8ec0285c36dfcb98bc607418a28bb5 |
| postgresql-static-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: a6080a68bebbbe6883e4feef89ba760de494cf2622cc61a4fb9385e1d131ee92 |
| postgresql-test-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: aeb99626e52bcf97ab610c7f486e8a46d7d7c35aa57e7839a0d49b50a09e7439 |
| postgresql-test-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 2e87a351947378ae707a28e28ac590df12197de1b29102e51b07a1346589c059 |
| postgresql-test-rpm-macros-12.22-1.module+el8.4.0+24442+74e4dc28.4.noarch.rpm | SHA-256: 1967392d034668f89c5ea7085379bf1e11fedd4c1a03c577f4264a278633beed |
| postgresql-upgrade-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 9302760825c729b87bbc04cbe2df8715b8dc8b0f7454fded3a20ede82c0476b2 |
| postgresql-upgrade-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 793ecb67c4a1f58c5329606321e07987b1e5027d21531c3c306d5ec8352331d3 |
| postgresql-upgrade-devel-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: d2fa0060b9f897b1a14d18e05d25b393e21ff4b415e6c40ee918cf3e69abd8ba |
| postgresql-upgrade-devel-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: e39752bbe47d91cdc93d62d7c317f67ee8499887e173abffcbc6da21e77470b2 |
Red Hat Enterprise Linux Server - AUS 8.4
| SRPM | |
|---|---|
| pgaudit-1.4.0-6.module+el8.4.0+11288+c193d6d7.src.rpm | SHA-256: b03a38090ec961b4c6fe83ae8e373284f0576a5472251536dfb1d10916b31177 |
| postgres-decoderbufs-0.10.0-2.module+el8.4.0+11288+c193d6d7.src.rpm | SHA-256: 4a6ff774095320178b96a836d62d5db488a36d985f86c0df120df6bdffe444e1 |
| postgresql-12.22-1.module+el8.4.0+24442+74e4dc28.4.src.rpm | SHA-256: da5f2a33ed9fcf0c583cd74b5be34de541f1aa39824f676510d36c733e8b851f |
| x86_64 | |
| pgaudit-1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: 0bbd0a783d7399c0a70bace3f71bd9bc706d57cfbd5a92355253eac38ef71d64 |
| pgaudit-debuginfo-1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: 7ec70c2c12b53aa6aef901acc2c48655d7acc11b45db3a5a8728a4eff214a610 |
| pgaudit-debugsource-1.4.0-6.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: efae4253c28d1d3774ef16406da959ed11d8dd45ba769426433fb7433cadee0c |
| postgres-decoderbufs-0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: a6b90b09552fcc2cc7778ea384a195d97850282bbab941aa1d37fd4c314d94ac |
| postgres-decoderbufs-debuginfo-0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: a30fa22fccb754620843adaba31b89c77e7c757cba5fc3707804b51190dd02ef |
| postgres-decoderbufs-debugsource-0.10.0-2.module+el8.4.0+11288+c193d6d7.x86_64.rpm | SHA-256: 5def5e99e1ff1ae1444788ab565fcd9d0ba1b9bea1a1650c3302fdaca8585ec3 |
| postgresql-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 53129d6a2d7a43e354be675a607baf8c80a7ee3220cbf586c117f3d51a647bc4 |
| postgresql-contrib-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 62319bf0c48f74c1df87ebb6ddc69cc5cbce861d41f96822090350e8e9df4fa5 |
| postgresql-contrib-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: b910bb0792d1d3ec37d88c96e4474a400c2e1a6f4fcb916495b70c7f2bf1a003 |
| postgresql-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: f77ea3a79b442ad5b44c36816786b1b9b56efec4c748d7763729ac0b6fe7678f |
| postgresql-debugsource-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 7e3af9907a6c57b19f35ef36f20ebc7af49085c0ae32c9d7993dff582d76e8b7 |
| postgresql-docs-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 4ec70f84a351ad995aa7ae0f6c02c5059b00601ee7c83860d439aa6a527f130c |
| postgresql-docs-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 5ce2658c55aac2cbaf5c656f20e7a49cc5667ba8315173af58ef9a501b5aef40 |
| postgresql-plperl-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 78746a9dff34cc245b0e425e51c99795882144b3fd1fe28cf4955dadd1980e68 |
| postgresql-plperl-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 482c4cddb042d9f86a6d9f917e0590d7db628cdcabc9cfb41ea0378cd34eb5a8 |
| postgresql-plpython3-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 29b633c27233badf5c332b39d134c2712e1aef38fdec95decb2075ce65d71c95 |
| postgresql-plpython3-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 9e1d4e8574496c2d2b73fa4d660f7fd5e8e5b96c70d3d09897c301159a7711ca |
| postgresql-pltcl-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: c6b2fe78c96c0d2b70f52f7c7339dc9f701540dd7b4d70b5e75186b8f3b024ef |
| postgresql-pltcl-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 32cb8227fa43bd364835d9a334b5ba4551f495df04ad96739bce5c9c7439212c |
| postgresql-server-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 849c649a5b0b83e0b8e30105b6ba3c253478d697015463d40b7a1fe227829c97 |
| postgresql-server-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 6f0a4d7c525b90b5b138926823d8de0e7ae47ea9d03b1a0ba8d0dbb7df6fd228 |
| postgresql-server-devel-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 4212deb1c15a5d9cc7d4954237d6f034102c708820e7533540da54ae2dfebfca |
| postgresql-server-devel-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: e2b14eddb4ea07edd65405a28262a2b3db8ec0285c36dfcb98bc607418a28bb5 |
| postgresql-static-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: a6080a68bebbbe6883e4feef89ba760de494cf2622cc61a4fb9385e1d131ee92 |
| postgresql-test-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: aeb99626e52bcf97ab610c7f486e8a46d7d7c35aa57e7839a0d49b50a09e7439 |
| postgresql-test-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 2e87a351947378ae707a28e28ac590df12197de1b29102e51b07a1346589c059 |
| postgresql-test-rpm-macros-12.22-1.module+el8.4.0+24442+74e4dc28.4.noarch.rpm | SHA-256: 1967392d034668f89c5ea7085379bf1e11fedd4c1a03c577f4264a278633beed |
| postgresql-upgrade-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 9302760825c729b87bbc04cbe2df8715b8dc8b0f7454fded3a20ede82c0476b2 |
| postgresql-upgrade-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: 793ecb67c4a1f58c5329606321e07987b1e5027d21531c3c306d5ec8352331d3 |
| postgresql-upgrade-devel-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: d2fa0060b9f897b1a14d18e05d25b393e21ff4b415e6c40ee918cf3e69abd8ba |
| postgresql-upgrade-devel-debuginfo-12.22-1.module+el8.4.0+24442+74e4dc28.4.x86_64.rpm | SHA-256: e39752bbe47d91cdc93d62d7c317f67ee8499887e173abffcbc6da21e77470b2 |
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