CVE-2026-31599: Linux kernel · media: vidtv: fix NULL pointer dereference in vidtv_channel_pmt_match_sections
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 12 Nov 2026, 00:34 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 24 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
Description
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
- git.kernel.org/stable/c/54e18a23e62e81b8335cec3e8e9c5cb33fd88665 (opens in a new tab)
- git.kernel.org/stable/c/5c986b77200b5ea754ba6636deacc7e0942fec9b (opens in a new tab)
- git.kernel.org/stable/c/93d9e747a9e8a5ca9e3c5e37dcff76b40399139f (opens in a new tab)
- git.kernel.org/stable/c/b7efb4c94797c504a1c678edb48c2aa311d3309f (opens in a new tab)
- git.kernel.org/stable/c/e589de36da106ef739ba98f66f5a5c2023370706 (opens in a new tab)
- git.kernel.org/stable/c/2dff11fb5098ae453651f8f77e94ad499c078022 (opens in a new tab)
- git.kernel.org/stable/c/b832cfd516b8504e95884622cee60bf9a39b7945 (opens in a new tab)
- git.kernel.org/stable/c/07c1e474cf9acf777f09d14a8f8dfcef5b84e46f (opens in a new tab)
- git.kernel.org/stable/c/f8e1fc918a9fe67103bcda01d20d745f264d00a7 (opens in a new tab)