{
  "public_date" : "2026-04-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: media: vidtv: fix NULL pointer dereference in vidtv_channel_pmt_match_sections",
    "id" : "2461461",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2461461"
  },
  "cwe" : "CWE-476",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nmedia: vidtv: fix NULL pointer dereference in vidtv_channel_pmt_match_sections\nsyzbot reported a general protection fault in vidtv_psi_desc_assign [1].\nvidtv_psi_pmt_stream_init() can return NULL on memory allocation\nfailure, but vidtv_channel_pmt_match_sections() does not check for\nthis. When tail is NULL, the subsequent call to\nvidtv_psi_desc_assign(&tail->descriptor, desc) dereferences a NULL\npointer offset, causing a general protection fault.\nAdd a NULL check after vidtv_psi_pmt_stream_init(). On failure, clean\nup the already-allocated stream chain and return.\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nRIP: 0010:vidtv_psi_desc_assign+0x24/0x90 drivers/media/test-drivers/vidtv/vidtv_psi.c:629\nCall Trace:\n<TASK>\nvidtv_channel_pmt_match_sections drivers/media/test-drivers/vidtv/vidtv_channel.c:349 [inline]\nvidtv_channel_si_init+0x1445/0x1a50 drivers/media/test-drivers/vidtv/vidtv_channel.c:479\nvidtv_mux_init+0x526/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:519\nvidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]\nvidtv_start_feed+0x33e/0x4d0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239", "A flaw was found in the Linux kernel's vidtv driver. This vulnerability stems from a failure to check for a null return value during memory allocation within the `vidtv_psi_pmt_stream_init` function. This oversight can lead to a null pointer dereference in `vidtv_channel_pmt_match_sections`, causing a general protection fault. The primary impact of this flaw is a system crash, resulting in a Denial of Service (DoS)." ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-31599\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31599\nhttps://lore.kernel.org/linux-cve-announce/2026042418-CVE-2026-31599-b2c6@gregkh/T" ],
  "name" : "CVE-2026-31599",
  "csaw" : false
}