{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49878","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-05-01T14:05:17.239Z","datePublished":"2025-05-01T14:10:26.389Z","dateUpdated":"2026-05-11T19:08:29.598Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:08:29.598Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, verifier: Fix memory leak in array reallocation for stack state\n\nIf an error (NULL) is returned by krealloc(), callers of realloc_array()\nwere setting their allocation pointers to NULL, but on error krealloc()\ndoes not touch the original allocation. This would result in a memory\nresource leak. Instead, free the old allocation on the error handling\npath.\n\nThe memory leak information is as follows as also reported by Zhengchao:\n\n  unreferenced object 0xffff888019801800 (size 256):\n  comm \"bpf_repo\", pid 6490, jiffies 4294959200 (age 17.170s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<00000000b211474b>] __kmalloc_node_track_caller+0x45/0xc0\n    [<0000000086712a0b>] krealloc+0x83/0xd0\n    [<00000000139aab02>] realloc_array+0x82/0xe2\n    [<00000000b1ca41d1>] grow_stack_state+0xfb/0x186\n    [<00000000cd6f36d2>] check_mem_access.cold+0x141/0x1341\n    [<0000000081780455>] do_check_common+0x5358/0xb350\n    [<0000000015f6b091>] bpf_check.cold+0xc3/0x29d\n    [<000000002973c690>] bpf_prog_load+0x13db/0x2240\n    [<00000000028d1644>] __sys_bpf+0x1605/0x4ce0\n    [<00000000053f29bd>] __x64_sys_bpf+0x75/0xb0\n    [<0000000056fedaf5>] do_syscall_64+0x35/0x80\n    [<000000002bd58261>] entry_SYSCALL_64_after_hwframe+0x63/0xcd"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/verifier.c"],"versions":[{"version":"c69431aab67a912836e5831f03d99a819c14c9c3","lessThan":"06615967d4889b08b19ff3dda96e8b131282f73d","status":"affected","versionType":"git"},{"version":"c69431aab67a912836e5831f03d99a819c14c9c3","lessThan":"3e210891c4a4c2d858cd6f9f61d5809af251d4df","status":"affected","versionType":"git"},{"version":"c69431aab67a912836e5831f03d99a819c14c9c3","lessThan":"42378a9ca55347102bbf86708776061d8fe3ece2","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/verifier.c"],"versions":[{"version":"5.14","status":"affected"},{"version":"0","lessThan":"5.14","status":"unaffected","versionType":"semver"},{"version":"5.15.79","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.0.9","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15.79"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.0.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/06615967d4889b08b19ff3dda96e8b131282f73d"},{"url":"https://git.kernel.org/stable/c/3e210891c4a4c2d858cd6f9f61d5809af251d4df"},{"url":"https://git.kernel.org/stable/c/42378a9ca55347102bbf86708776061d8fe3ece2"}],"title":"bpf, verifier: Fix memory leak in array reallocation for stack state","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-401","lang":"en","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T16:02:47.368598Z","id":"CVE-2022-49878","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T16:02:49.951Z"}}]}}