{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31744","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.138Z","datePublished":"2026-05-01T14:14:38.820Z","dateUpdated":"2026-05-11T22:14:55.237Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:14:55.237Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nPM: EM: Fix NULL pointer dereference when perf domain ID is not found\n\ndev_energymodel_nl_get_perf_domains_doit() calls\nem_perf_domain_get_by_id() but does not check the return value before\npassing it to __em_nl_get_pd_size(). When a caller supplies a\nnon-existent perf domain ID, em_perf_domain_get_by_id() returns NULL,\nand __em_nl_get_pd_size() immediately dereferences pd->cpus\n(struct offset 0x30), causing a NULL pointer dereference.\n\nThe sister handler dev_energymodel_nl_get_perf_table_doit() already\nhandles this correctly via __em_nl_get_pd_table_id(), which returns\nNULL and causes the caller to return -EINVAL. Add the same NULL check\nin the get-perf-domains do handler.\n\n[ rjw: Subject and changelog edits ]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/power/em_netlink.c"],"versions":[{"version":"380ff27af25e49e2cb2ff8fd0ecd7c95be2976ee","lessThan":"ab09b9a1e3b02ff62c5aebe3b12b0cb4cb4ea8ab","status":"affected","versionType":"git"},{"version":"380ff27af25e49e2cb2ff8fd0ecd7c95be2976ee","lessThan":"9badc2a84e688be1275bb740942d5f6f51746908","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/power/em_netlink.c"],"versions":[{"version":"6.19","status":"affected"},{"version":"0","lessThan":"6.19","status":"unaffected","versionType":"semver"},{"version":"6.19.12","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"6.19","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ab09b9a1e3b02ff62c5aebe3b12b0cb4cb4ea8ab"},{"url":"https://git.kernel.org/stable/c/9badc2a84e688be1275bb740942d5f6f51746908"}],"title":"PM: EM: Fix NULL pointer dereference when perf domain ID is not found","x_generator":{"engine":"bippy-1.2.0"}}}}