CVE-2026-53382media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si
- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si syzbot reported a general protection fault in vidtv_psi_ts_psi_write_into [1]. vidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does not check for this before dereferencing the returned pointer to access the continuity counter. This leads to a general protection fault when accessing a near-NULL address. The root cause is that vidtv_mux_pid_ctx_init() does not check the return value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs. If the allocation fails, the PID context is never created, but init returns success. The subsequent vidtv_mux_push_si() call then gets NULL from vidtv_mux_get_pid_ctx() and crashes. Fix both the root cause (add error check in vidtv_mux_pid_ctx_init for PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for all vidtv_mux_get_pid_ctx() calls. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Workqueue: events vidtv_mux_tick RIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197 Call Trace: <TASK> vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline] vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231 vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196 vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408
Timeline
ID reserved
By Linux
- 40 days later
· 40 days later
Published
- 29 days later
· 29 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < 455bc12e7b73ab5a2dfcb47822e91e772bc6c42e
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < f0f5a1d7056980a0d512456fdb370cfb72bba86a
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < 6df7e16d4f742c80add58995a6e69385b97aa9e6
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < cd923dadefadb9671b5ac341b672ff424d429c39
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < 353d9578951dd38bc9679308f5b618ceed1f20fa
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < f965cf22dda7f512f4922415894c3e528269a4ae
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < b28b12be6e8910489e6800ed93ea4d41dfe19683
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < 232e4b313ea342672edf8947e067c0de4328405b
- affected f90cf6079bf67988f8b1ad1ade70fc89d0080905 – < 7d8bf3d8f91073f4db347ed3aa6302b56107499c
- affected 5.10
- unaffected < 5.10
- unaffected 5.10.260 – ≤ 5.10.*
- unaffected 5.15.211 – ≤ 5.15.*
- unaffected 6.1.177 – ≤ 6.1.*
- unaffected 6.6.144 – ≤ 6.6.*
- unaffected 6.12.95 – ≤ 6.12.*
- unaffected 6.18.37 – ≤ 6.18.*
- unaffected 7.0.14 – ≤ 7.0.*
- unaffected 7.1.2 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References9
- https://git.kernel.org/stable/c/455bc12e7b73ab5a2dfcb47822e91e772bc6c42e (opens in a new tab)
- https://git.kernel.org/stable/c/f0f5a1d7056980a0d512456fdb370cfb72bba86a (opens in a new tab)
- https://git.kernel.org/stable/c/6df7e16d4f742c80add58995a6e69385b97aa9e6 (opens in a new tab)
- https://git.kernel.org/stable/c/cd923dadefadb9671b5ac341b672ff424d429c39 (opens in a new tab)
- https://git.kernel.org/stable/c/353d9578951dd38bc9679308f5b618ceed1f20fa (opens in a new tab)
- https://git.kernel.org/stable/c/f965cf22dda7f512f4922415894c3e528269a4ae (opens in a new tab)
- https://git.kernel.org/stable/c/b28b12be6e8910489e6800ed93ea4d41dfe19683 (opens in a new tab)
- https://git.kernel.org/stable/c/232e4b313ea342672edf8947e067c0de4328405b (opens in a new tab)
- https://git.kernel.org/stable/c/7d8bf3d8f91073f4db347ed3aa6302b56107499c (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45504 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-53382)Record last updated .