CVE-2026-31599 (GCVE-0-2026-31599)
Vulnerability from cvelistv5
Published
2026-04-24 14:42
Modified
2026-04-27 13:56
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
media: vidtv: fix NULL pointer dereference in vidtv_channel_pmt_match_sections
syzbot reported a general protection fault in vidtv_psi_desc_assign [1].
vidtv_psi_pmt_stream_init() can return NULL on memory allocation
failure, but vidtv_channel_pmt_match_sections() does not check for
this. When tail is NULL, the subsequent call to
vidtv_psi_desc_assign(&tail->descriptor, desc) dereferences a NULL
pointer offset, causing a general protection fault.
Add a NULL check after vidtv_psi_pmt_stream_init(). On failure, clean
up the already-allocated stream chain and return.
[1]
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
RIP: 0010:vidtv_psi_desc_assign+0x24/0x90 drivers/media/test-drivers/vidtv/vidtv_psi.c:629
Call Trace:
<TASK>
vidtv_channel_pmt_match_sections drivers/media/test-drivers/vidtv/vidtv_channel.c:349 [inline]
vidtv_channel_si_init+0x1445/0x1a50 drivers/media/test-drivers/vidtv/vidtv_channel.c:479
vidtv_mux_init+0x526/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:519
vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]
vidtv_start_feed+0x33e/0x4d0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: f90cf6079bf67988f8b1ad1ade70fc89d0080905 Version: f90cf6079bf67988f8b1ad1ade70fc89d0080905 Version: f90cf6079bf67988f8b1ad1ade70fc89d0080905 Version: f90cf6079bf67988f8b1ad1ade70fc89d0080905 Version: f90cf6079bf67988f8b1ad1ade70fc89d0080905 Version: f90cf6079bf67988f8b1ad1ade70fc89d0080905 |
||
{
"containers": {
"cna": {
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"product": "Linux",
"programFiles": [
"drivers/media/test-drivers/vidtv/vidtv_channel.c"
],
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "5.10"
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"status": "unaffected",
"version": "6.12.83",
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{
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"status": "unaffected",
"version": "6.18.24",
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},
{
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"status": "unaffected",
"version": "6.19.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.1",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: fix NULL pointer dereference in vidtv_channel_pmt_match_sections\n\nsyzbot reported a general protection fault in vidtv_psi_desc_assign [1].\n\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(\u0026tail-\u003edescriptor, desc) dereferences a NULL\npointer offset, causing a general protection fault.\n\nAdd a NULL check after vidtv_psi_pmt_stream_init(). On failure, clean\nup the already-allocated stream chain and return.\n\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 \u003cTASK\u003e\n vidtv_channel_pmt_match_sections drivers/media/test-drivers/vidtv/vidtv_channel.c:349 [inline]\n vidtv_channel_si_init+0x1445/0x1a50 drivers/media/test-drivers/vidtv/vidtv_channel.c:479\n vidtv_mux_init+0x526/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:519\n vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]\n vidtv_start_feed+0x33e/0x4d0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239"
}
],
"providerMetadata": {
"dateUpdated": "2026-04-27T13:56:42.711Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/b7efb4c94797c504a1c678edb48c2aa311d3309f"
},
{
"url": "https://git.kernel.org/stable/c/e589de36da106ef739ba98f66f5a5c2023370706"
},
{
"url": "https://git.kernel.org/stable/c/2dff11fb5098ae453651f8f77e94ad499c078022"
},
{
"url": "https://git.kernel.org/stable/c/b832cfd516b8504e95884622cee60bf9a39b7945"
},
{
"url": "https://git.kernel.org/stable/c/07c1e474cf9acf777f09d14a8f8dfcef5b84e46f"
},
{
"url": "https://git.kernel.org/stable/c/f8e1fc918a9fe67103bcda01d20d745f264d00a7"
}
],
"title": "media: vidtv: fix NULL pointer dereference in vidtv_channel_pmt_match_sections",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-31599",
"datePublished": "2026-04-24T14:42:23.961Z",
"dateReserved": "2026-03-09T15:48:24.121Z",
"dateUpdated": "2026-04-27T13:56:42.711Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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