{"id":"CVE-2022-49875","state":"PUBLISHED","title":"bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE\n\nWhen using bpftool to pin {PROG, MAP, LINK} without FILE,\nsegmentation fault will occur. The reson is that the lack\nof FILE will cause strlen to trigger NULL pointer dereference.\nThe corresponding stacktrace is shown below:\n\ndo_pin\n  do_pin_any\n    do_pin_fd\n      mount_bpffs_for_pin\n        strlen(name) <- NULL pointer dereference\n\nFix it by adding validation to the common process.","publishedAt":"2025-05-01T14:10:24.427Z","updatedAt":"2026-05-11T19:08:25.941Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"8c80b2fca4112d724dde477aed13f7b0510a2792","versionType":"git"},{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a","versionType":"git"},{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"da5161ba94c5e9182c301dd4f09c94f715c068bd","versionType":"git"},{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"34de8e6e0e1f66e431abf4123934a2581cb5f133","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/bpf/bpftool/common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","versionType":"semver"},{"version":"5.10.155","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.79","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.9","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/bpf/bpftool/common.c"]}],"references":["https://git.kernel.org/stable/c/8c80b2fca4112d724dde477aed13f7b0510a2792","https://git.kernel.org/stable/c/6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a","https://git.kernel.org/stable/c/da5161ba94c5e9182c301dd4f09c94f715c068bd","https://git.kernel.org/stable/c/34de8e6e0e1f66e431abf4123934a2581cb5f133"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49875.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49875","state":"PUBLISHED","datePublished":"2025-05-01T14:10:24.427Z","dateUpdated":"2026-05-11T19:08:25.941Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-05-01T14:05:17.238Z"},"containers":{"cna":{"title":"bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE\n\nWhen using bpftool to pin {PROG, MAP, LINK} without FILE,\nsegmentation fault will occur. The reson is that the lack\nof FILE will cause strlen to trigger NULL pointer dereference.\nThe corresponding stacktrace is shown below:\n\ndo_pin\n  do_pin_any\n    do_pin_fd\n      mount_bpffs_for_pin\n        strlen(name) <- NULL pointer dereference\n\nFix it by adding validation to the common process."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"8c80b2fca4112d724dde477aed13f7b0510a2792","versionType":"git"},{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a","versionType":"git"},{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"da5161ba94c5e9182c301dd4f09c94f715c068bd","versionType":"git"},{"version":"75a1e792c335b5c6d7fdb1014da47aeb64c5944f","status":"affected","lessThan":"34de8e6e0e1f66e431abf4123934a2581cb5f133","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/bpf/bpftool/common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","versionType":"semver"},{"version":"5.10.155","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.79","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.9","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/bpf/bpftool/common.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8c80b2fca4112d724dde477aed13f7b0510a2792"},{"url":"https://git.kernel.org/stable/c/6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a"},{"url":"https://git.kernel.org/stable/c/da5161ba94c5e9182c301dd4f09c94f715c068bd"},{"url":"https://git.kernel.org/stable/c/34de8e6e0e1f66e431abf4123934a2581cb5f133"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:08:25.941Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.155"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.79"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.0.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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":"2025-10-01T16:03:22.346779Z","id":"CVE-2022-49875","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","type":"CWE","lang":"en","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T16:03:25.233Z"}}]}}}