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CVE-2026-53382

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.1%
Linux•Linux•Versions : <=6.1.*, <=7.0.*, <=6.12.*, 6.6.144, 5.15.211, 7.0.14, 0, <=7.1.*, <7d8bf3d8f91073f4db347ed3aa6302b56107499c, <455bc12e7b73ab5a2dfcb47822e91e772bc6c42e, <b28b12be6e8910489e6800ed93ea4d41dfe19683, 5.10.260, <=5.10.*, <=6.6.*, 6.12.95, <6df7e16d4f742c80add58995a6e69385b97aa9e6, <353d9578951dd38bc9679308f5b618ceed1f20fa, 7.1.2, <f965cf22dda7f512f4922415894c3e528269a4ae, <5.10, 6.18.37, <=6.18.*, f90cf6079bf67988f8b1ad1ade70fc89d0080905, 6.1.177, <=*, <=5.15.*, <f0f5a1d7056980a0d512456fdb370cfb72bba86a, <232e4b313ea342672edf8947e067c0de4328405b, <cd923dadefadb9671b5ac341b672ff424d429c39, 7.2, 5.10

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

Gravité et risque d'exploitation

CVE-2026-53382 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.13 %, ce qui la place devant 2.5 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, <=7.0.*, <=6.12.*, 6.6.144, 5.15.211, 7.0.14, 0, <=7.1.*, <7d8bf3d8f91073f4db347ed3aa6302b56107499c, <455bc12e7b73ab5a2dfcb47822e91e772bc6c42e, <b28b12be6e8910489e6800ed93ea4d41dfe19683, 5.10.260, <=5.10.*, <=6.6.*, 6.12.95, <6df7e16d4f742c80add58995a6e69385b97aa9e6, <353d9578951dd38bc9679308f5b618ceed1f20fa, 7.1.2, <f965cf22dda7f512f4922415894c3e528269a4ae, <5.10, 6.18.37, <=6.18.*, f90cf6079bf67988f8b1ad1ade70fc89d0080905, 6.1.177, <=*, <=5.15.*, <f0f5a1d7056980a0d512456fdb370cfb72bba86a, <232e4b313ea342672edf8947e067c0de4328405b, <cd923dadefadb9671b5ac341b672ff424d429c39, 7.2, 5.10) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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