{"id":"CVE-2023-52939","state":"PUBLISHED","title":"mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()\n\nAs commit 18365225f044 (\"hwpoison, memcg: forcibly uncharge LRU pages\"),\nhwpoison will forcibly uncharg a LRU hwpoisoned page, the folio_memcg\ncould be NULl, then, mem_cgroup_track_foreign_dirty_slowpath() could\noccurs a NULL pointer dereference, let's do not record the foreign\nwritebacks for folio memcg is null in mem_cgroup_track_foreign_dirty() to\nfix it.","publishedAt":"2025-03-27T16:37:18.026Z","updatedAt":"2026-05-11T19:36:07.208Z","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":"97b27821b4854ca744946dae32a3f2fd55bcd5bc","status":"affected","lessThan":"b79ba5953f6fdc5559389ad415620bffc24f024b","versionType":"git"},{"version":"97b27821b4854ca744946dae32a3f2fd55bcd5bc","status":"affected","lessThan":"ac86f547ca1002aec2ef66b9e64d03f45bbbfbb9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/memcontrol.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"6.1.11","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/memcontrol.h"]}],"references":["https://git.kernel.org/stable/c/b79ba5953f6fdc5559389ad415620bffc24f024b","https://git.kernel.org/stable/c/ac86f547ca1002aec2ef66b9e64d03f45bbbfbb9"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/52xxx/CVE-2023-52939.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52939","state":"PUBLISHED","datePublished":"2025-03-27T16:37:18.026Z","dateUpdated":"2026-05-11T19:36:07.208Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-08-21T06:07:11.022Z"},"containers":{"cna":{"title":"mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()\n\nAs commit 18365225f044 (\"hwpoison, memcg: forcibly uncharge LRU pages\"),\nhwpoison will forcibly uncharg a LRU hwpoisoned page, the folio_memcg\ncould be NULl, then, mem_cgroup_track_foreign_dirty_slowpath() could\noccurs a NULL pointer dereference, let's do not record the foreign\nwritebacks for folio memcg is null in mem_cgroup_track_foreign_dirty() to\nfix it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"97b27821b4854ca744946dae32a3f2fd55bcd5bc","status":"affected","lessThan":"b79ba5953f6fdc5559389ad415620bffc24f024b","versionType":"git"},{"version":"97b27821b4854ca744946dae32a3f2fd55bcd5bc","status":"affected","lessThan":"ac86f547ca1002aec2ef66b9e64d03f45bbbfbb9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/memcontrol.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"6.1.11","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/memcontrol.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/b79ba5953f6fdc5559389ad415620bffc24f024b"},{"url":"https://git.kernel.org/stable/c/ac86f547ca1002aec2ef66b9e64d03f45bbbfbb9"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:36:07.208Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"6.2"}]}]}],"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":"2025-10-01T17:37:07.765012Z","id":"CVE-2023-52939","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":"2025-10-01T17:37:10.025Z"}}]}}}