{"id":"CVE-2022-49890","state":"PUBLISHED","title":"capabilities: fix potential memleak on error path from vfs_getxattr_alloc()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncapabilities: fix potential memleak on error path from vfs_getxattr_alloc()\n\nIn cap_inode_getsecurity(), we will use vfs_getxattr_alloc() to\ncomplete the memory allocation of tmpbuf, if we have completed\nthe memory allocation of tmpbuf, but failed to call handler->get(...),\nthere will be a memleak in below logic:\n\n  |-- ret = (int)vfs_getxattr_alloc(mnt_userns, ...)\n    |           /* ^^^ alloc for tmpbuf */\n    |-- value = krealloc(*xattr_value, error + 1, flags)\n    |           /* ^^^ alloc memory */\n    |-- error = handler->get(handler, ...)\n    |           /* error! */\n    |-- *xattr_value = value\n    |           /* xattr_value is &tmpbuf (memory leak!) */\n\nSo we will try to free(tmpbuf) after vfs_getxattr_alloc() fails to fix it.\n\n[PM: subject line and backtrace tweaks]","publishedAt":"2025-05-01T14:10:34.481Z","updatedAt":"2026-05-11T19:08:43.268Z","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":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"90577bcc01c4188416a47269f8433f70502abe98","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"0c3e6288da650d1ec911a259c77bc2d88e498603","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"cdf01c807e974048c43c7fd3ca574f6086a57906","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"2de8eec8afb75792440b8900a01d52b8f6742fd1","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"7480aeff0093d8c54377553ec6b31110bea37b4d","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"8cf0a1bc12870d148ae830a4ba88cfdf0e879cee","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/commoncap.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","versionType":"semver"},{"version":"4.14.299","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.265","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.224","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.154","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.78","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.8","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":["security/commoncap.c"]}],"references":["https://git.kernel.org/stable/c/6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85","https://git.kernel.org/stable/c/90577bcc01c4188416a47269f8433f70502abe98","https://git.kernel.org/stable/c/0c3e6288da650d1ec911a259c77bc2d88e498603","https://git.kernel.org/stable/c/cdf01c807e974048c43c7fd3ca574f6086a57906","https://git.kernel.org/stable/c/2de8eec8afb75792440b8900a01d52b8f6742fd1","https://git.kernel.org/stable/c/7480aeff0093d8c54377553ec6b31110bea37b4d","https://git.kernel.org/stable/c/8cf0a1bc12870d148ae830a4ba88cfdf0e879cee"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49890.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49890","state":"PUBLISHED","datePublished":"2025-05-01T14:10:34.481Z","dateUpdated":"2026-05-11T19:08:43.268Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-05-01T14:05:17.242Z"},"containers":{"cna":{"title":"capabilities: fix potential memleak on error path from vfs_getxattr_alloc()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncapabilities: fix potential memleak on error path from vfs_getxattr_alloc()\n\nIn cap_inode_getsecurity(), we will use vfs_getxattr_alloc() to\ncomplete the memory allocation of tmpbuf, if we have completed\nthe memory allocation of tmpbuf, but failed to call handler->get(...),\nthere will be a memleak in below logic:\n\n  |-- ret = (int)vfs_getxattr_alloc(mnt_userns, ...)\n    |           /* ^^^ alloc for tmpbuf */\n    |-- value = krealloc(*xattr_value, error + 1, flags)\n    |           /* ^^^ alloc memory */\n    |-- error = handler->get(handler, ...)\n    |           /* error! */\n    |-- *xattr_value = value\n    |           /* xattr_value is &tmpbuf (memory leak!) */\n\nSo we will try to free(tmpbuf) after vfs_getxattr_alloc() fails to fix it.\n\n[PM: subject line and backtrace tweaks]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"90577bcc01c4188416a47269f8433f70502abe98","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"0c3e6288da650d1ec911a259c77bc2d88e498603","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"cdf01c807e974048c43c7fd3ca574f6086a57906","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"2de8eec8afb75792440b8900a01d52b8f6742fd1","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"7480aeff0093d8c54377553ec6b31110bea37b4d","versionType":"git"},{"version":"8db6c34f1dbc8e06aa016a9b829b06902c3e1340","status":"affected","lessThan":"8cf0a1bc12870d148ae830a4ba88cfdf0e879cee","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/commoncap.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","versionType":"semver"},{"version":"4.14.299","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.265","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.224","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.154","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.78","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.8","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":["security/commoncap.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85"},{"url":"https://git.kernel.org/stable/c/90577bcc01c4188416a47269f8433f70502abe98"},{"url":"https://git.kernel.org/stable/c/0c3e6288da650d1ec911a259c77bc2d88e498603"},{"url":"https://git.kernel.org/stable/c/cdf01c807e974048c43c7fd3ca574f6086a57906"},{"url":"https://git.kernel.org/stable/c/2de8eec8afb75792440b8900a01d52b8f6742fd1"},{"url":"https://git.kernel.org/stable/c/7480aeff0093d8c54377553ec6b31110bea37b4d"},{"url":"https://git.kernel.org/stable/c/8cf0a1bc12870d148ae830a4ba88cfdf0e879cee"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:08:43.268Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"4.14.299"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"4.19.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.4.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.10.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.15.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.0.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","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":"2025-10-01T16:08:33.672566Z","id":"CVE-2022-49890","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","type":"CWE","lang":"en","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T16:08:36.059Z"}}]}}}