{"id":"CVE-2026-53382","state":"PUBLISHED","title":"media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: fix NULL pointer dereference in vidtv_mux_push_si\n\nsyzbot reported a general protection fault in\nvidtv_psi_ts_psi_write_into [1].\n\nvidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does\nnot check for this before dereferencing the returned pointer to access\nthe continuity counter. This leads to a general protection fault when\naccessing a near-NULL address.\n\nThe root cause is that vidtv_mux_pid_ctx_init() does not check the\nreturn value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs.\nIf the allocation fails, the PID context is never created, but init\nreturns success. The subsequent vidtv_mux_push_si() call then gets\nNULL from vidtv_mux_get_pid_ctx() and crashes.\n\nFix both the root cause (add error check in vidtv_mux_pid_ctx_init\nfor PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for\nall vidtv_mux_get_pid_ctx() calls.\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]\nWorkqueue: events vidtv_mux_tick\nRIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197\nCall Trace:\n <TASK>\n vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline]\n vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231\n vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196\n vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408","publishedAt":"2026-07-19T11:59:31.045Z","updatedAt":"2026-08-17T04:50:32.686Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"455bc12e7b73ab5a2dfcb47822e91e772bc6c42e","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"f0f5a1d7056980a0d512456fdb370cfb72bba86a","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"6df7e16d4f742c80add58995a6e69385b97aa9e6","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"cd923dadefadb9671b5ac341b672ff424d429c39","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"353d9578951dd38bc9679308f5b618ceed1f20fa","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"f965cf22dda7f512f4922415894c3e528269a4ae","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"b28b12be6e8910489e6800ed93ea4d41dfe19683","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"232e4b313ea342672edf8947e067c0de4328405b","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"7d8bf3d8f91073f4db347ed3aa6302b56107499c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/test-drivers/vidtv/vidtv_mux.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.260","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.211","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.37","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.14","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1.2","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/test-drivers/vidtv/vidtv_mux.c"]}],"references":["https://git.kernel.org/stable/c/455bc12e7b73ab5a2dfcb47822e91e772bc6c42e","https://git.kernel.org/stable/c/f0f5a1d7056980a0d512456fdb370cfb72bba86a","https://git.kernel.org/stable/c/6df7e16d4f742c80add58995a6e69385b97aa9e6","https://git.kernel.org/stable/c/cd923dadefadb9671b5ac341b672ff424d429c39","https://git.kernel.org/stable/c/353d9578951dd38bc9679308f5b618ceed1f20fa","https://git.kernel.org/stable/c/f965cf22dda7f512f4922415894c3e528269a4ae","https://git.kernel.org/stable/c/b28b12be6e8910489e6800ed93ea4d41dfe19683","https://git.kernel.org/stable/c/232e4b313ea342672edf8947e067c0de4328405b","https://git.kernel.org/stable/c/7d8bf3d8f91073f4db347ed3aa6302b56107499c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53382.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53382","state":"PUBLISHED","datePublished":"2026-07-19T11:59:31.045Z","dateUpdated":"2026-08-17T04:50:32.686Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.401Z"},"containers":{"cna":{"title":"media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: fix NULL pointer dereference in vidtv_mux_push_si\n\nsyzbot reported a general protection fault in\nvidtv_psi_ts_psi_write_into [1].\n\nvidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does\nnot check for this before dereferencing the returned pointer to access\nthe continuity counter. This leads to a general protection fault when\naccessing a near-NULL address.\n\nThe root cause is that vidtv_mux_pid_ctx_init() does not check the\nreturn value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs.\nIf the allocation fails, the PID context is never created, but init\nreturns success. The subsequent vidtv_mux_push_si() call then gets\nNULL from vidtv_mux_get_pid_ctx() and crashes.\n\nFix both the root cause (add error check in vidtv_mux_pid_ctx_init\nfor PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for\nall vidtv_mux_get_pid_ctx() calls.\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]\nWorkqueue: events vidtv_mux_tick\nRIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197\nCall Trace:\n <TASK>\n vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline]\n vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231\n vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196\n vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"455bc12e7b73ab5a2dfcb47822e91e772bc6c42e","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"f0f5a1d7056980a0d512456fdb370cfb72bba86a","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"6df7e16d4f742c80add58995a6e69385b97aa9e6","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"cd923dadefadb9671b5ac341b672ff424d429c39","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"353d9578951dd38bc9679308f5b618ceed1f20fa","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"f965cf22dda7f512f4922415894c3e528269a4ae","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"b28b12be6e8910489e6800ed93ea4d41dfe19683","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"232e4b313ea342672edf8947e067c0de4328405b","versionType":"git"},{"version":"f90cf6079bf67988f8b1ad1ade70fc89d0080905","status":"affected","lessThan":"7d8bf3d8f91073f4db347ed3aa6302b56107499c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/test-drivers/vidtv/vidtv_mux.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.260","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.211","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.37","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.14","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1.2","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/test-drivers/vidtv/vidtv_mux.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/455bc12e7b73ab5a2dfcb47822e91e772bc6c42e"},{"url":"https://git.kernel.org/stable/c/f0f5a1d7056980a0d512456fdb370cfb72bba86a"},{"url":"https://git.kernel.org/stable/c/6df7e16d4f742c80add58995a6e69385b97aa9e6"},{"url":"https://git.kernel.org/stable/c/cd923dadefadb9671b5ac341b672ff424d429c39"},{"url":"https://git.kernel.org/stable/c/353d9578951dd38bc9679308f5b618ceed1f20fa"},{"url":"https://git.kernel.org/stable/c/f965cf22dda7f512f4922415894c3e528269a4ae"},{"url":"https://git.kernel.org/stable/c/b28b12be6e8910489e6800ed93ea4d41dfe19683"},{"url":"https://git.kernel.org/stable/c/232e4b313ea342672edf8947e067c0de4328405b"},{"url":"https://git.kernel.org/stable/c/7d8bf3d8f91073f4db347ed3aa6302b56107499c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T04:50:32.686Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.260"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.0.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5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