{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53590","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-04T15:40:38.478Z","datePublished":"2025-10-04T15:44:04.733Z","dateUpdated":"2026-05-11T19:48:00.841Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:48:00.841Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: add a refcnt in sctp_stream_priorities to avoid a nested loop\n\nWith this refcnt added in sctp_stream_priorities, we don't need to\ntraverse all streams to check if the prio is used by other streams\nwhen freeing one stream's prio in sctp_sched_prio_free_sid(). This\ncan avoid a nested loop (up to 65535 * 65535), which may cause a\nstuck as Ying reported:\n\n    watchdog: BUG: soft lockup - CPU#23 stuck for 26s! [ksoftirqd/23:136]\n    Call Trace:\n     <TASK>\n     sctp_sched_prio_free_sid+0xab/0x100 [sctp]\n     sctp_stream_free_ext+0x64/0xa0 [sctp]\n     sctp_stream_free+0x31/0x50 [sctp]\n     sctp_association_free+0xa5/0x200 [sctp]\n\nNote that it doesn't need to use refcount_t type for this counter,\nas its accessing is always protected under the sock lock.\n\nv1->v2:\n - add a check in sctp_sched_prio_set to avoid the possible prio_head\n   refcnt overflow."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/net/sctp/structs.h","net/sctp/stream_sched_prio.c"],"versions":[{"version":"a7555681e50bdebed2c40ff7404ee73c2e932993","lessThan":"cec326443f01283ef68ea00c06ea073b1835a562","status":"affected","versionType":"git"},{"version":"176ee6c673ccd118e9392fd2dbb165423bdb99ca","lessThan":"8ee401f89cdb10f39098c0656d695b2bc4052100","status":"affected","versionType":"git"},{"version":"0dfb9a566327182387c90100ea54d8426cee8c67","lessThan":"bf5540cbd20e2dae2c81ab9b31deef41ef147d0a","status":"affected","versionType":"git"},{"version":"9ed7bfc79542119ac0a9e1ce8a2a5285e43433e9","lessThan":"03c3a5584a0a29821e59b7834635ce823050caaa","status":"affected","versionType":"git"},{"version":"9ed7bfc79542119ac0a9e1ce8a2a5285e43433e9","lessThan":"6d529928ea212127851a2df8c40d822237ca946b","status":"affected","versionType":"git"},{"version":"9ed7bfc79542119ac0a9e1ce8a2a5285e43433e9","lessThan":"68ba44639537de6f91fe32783766322d41848127","status":"affected","versionType":"git"},{"version":"fa20f88271259d42ebe66f0a8c4c20199e888c99","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/net/sctp/structs.h","net/sctp/stream_sched_prio.c"],"versions":[{"version":"6.1","status":"affected"},{"version":"0","lessThan":"6.1","status":"unaffected","versionType":"semver"},{"version":"5.4.235","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.173","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.100","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.18","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.5","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3","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":"5.4.226","versionEndExcluding":"5.4.235"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.158","versionEndExcluding":"5.10.173"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.82","versionEndExcluding":"5.15.100"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.1.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0.12"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/cec326443f01283ef68ea00c06ea073b1835a562"},{"url":"https://git.kernel.org/stable/c/8ee401f89cdb10f39098c0656d695b2bc4052100"},{"url":"https://git.kernel.org/stable/c/bf5540cbd20e2dae2c81ab9b31deef41ef147d0a"},{"url":"https://git.kernel.org/stable/c/03c3a5584a0a29821e59b7834635ce823050caaa"},{"url":"https://git.kernel.org/stable/c/6d529928ea212127851a2df8c40d822237ca946b"},{"url":"https://git.kernel.org/stable/c/68ba44639537de6f91fe32783766322d41848127"}],"title":"sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop","x_generator":{"engine":"bippy-1.2.0"}}}}