{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68779","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-24T10:30:51.036Z","datePublished":"2026-01-13T15:28:54.795Z","dateUpdated":"2026-05-11T21:53:11.439Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:53:11.439Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Avoid unregistering PSP twice\n\nPSP is unregistered twice in:\n_mlx5e_remove -> mlx5e_psp_unregister\nmlx5e_nic_cleanup -> mlx5e_psp_unregister\n\nThis leads to a refcount underflow in some conditions:\n------------[ cut here ]------------\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 2 PID: 1694 at lib/refcount.c:28 refcount_warn_saturate+0xd8/0xe0\n[...]\n mlx5e_psp_unregister+0x26/0x50 [mlx5_core]\n mlx5e_nic_cleanup+0x26/0x90 [mlx5_core]\n mlx5e_remove+0xe6/0x1f0 [mlx5_core]\n auxiliary_bus_remove+0x18/0x30\n device_release_driver_internal+0x194/0x1f0\n bus_remove_device+0xc6/0x130\n device_del+0x159/0x3c0\n mlx5_rescan_drivers_locked+0xbc/0x2a0 [mlx5_core]\n[...]\n\nDo not directly remove psp from the _mlx5e_remove path, the PSP cleanup\nhappens as part of profile cleanup."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en_main.c"],"versions":[{"version":"89ee2d92f66c45625ff1c173df2dbdea32568c5d","lessThan":"e12c912f92ccea671b514caf371f28485714bb4b","status":"affected","versionType":"git"},{"version":"89ee2d92f66c45625ff1c173df2dbdea32568c5d","lessThan":"35e93736f69963337912594eb3951ab320b77521","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en_main.c"],"versions":[{"version":"6.18","status":"affected"},{"version":"0","lessThan":"6.18","status":"unaffected","versionType":"semver"},{"version":"6.18.3","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","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":"6.18","versionEndExcluding":"6.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e12c912f92ccea671b514caf371f28485714bb4b"},{"url":"https://git.kernel.org/stable/c/35e93736f69963337912594eb3951ab320b77521"}],"title":"net/mlx5e: Avoid unregistering PSP twice","x_generator":{"engine":"bippy-1.2.0"}}}}