{"id":"CVE-2022-50372","state":"PUBLISHED","title":"cifs: Fix memory leak when build ntlmssp negotiate blob failed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak when build ntlmssp negotiate blob failed\n\nThere is a memory leak when mount cifs:\n  unreferenced object 0xffff888166059600 (size 448):\n    comm \"mount.cifs\", pid 51391, jiffies 4295596373 (age 330.596s)\n    hex dump (first 32 bytes):\n      fe 53 4d 42 40 00 00 00 00 00 00 00 01 00 82 00  .SMB@...........\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [<0000000060609a61>] mempool_alloc+0xe1/0x260\n      [<00000000adfa6c63>] cifs_small_buf_get+0x24/0x60\n      [<00000000ebb404c7>] __smb2_plain_req_init+0x32/0x460\n      [<00000000bcf875b4>] SMB2_sess_alloc_buffer+0xa4/0x3f0\n      [<00000000753a2987>] SMB2_sess_auth_rawntlmssp_negotiate+0xf5/0x480\n      [<00000000f0c1f4f9>] SMB2_sess_setup+0x253/0x410\n      [<00000000a8b83303>] cifs_setup_session+0x18f/0x4c0\n      [<00000000854bd16d>] cifs_get_smb_ses+0xae7/0x13c0\n      [<000000006cbc43d9>] mount_get_conns+0x7a/0x730\n      [<000000005922d816>] cifs_mount+0x103/0xd10\n      [<00000000e33def3b>] cifs_smb3_do_mount+0x1dd/0xc90\n      [<0000000078034979>] smb3_get_tree+0x1d5/0x300\n      [<000000004371f980>] vfs_get_tree+0x41/0xf0\n      [<00000000b670d8a7>] path_mount+0x9b3/0xdd0\n      [<000000005e839a7d>] __x64_sys_mount+0x190/0x1d0\n      [<000000009404c3b9>] do_syscall_64+0x35/0x80\n\nWhen build ntlmssp negotiate blob failed, the session setup request\nshould be freed.","publishedAt":"2025-09-17T14:56:27.577Z","updatedAt":"2026-05-11T19:18:16.908Z","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":"49bd49f983b5026e4557d31c5d737d9657c4113e","status":"affected","lessThan":"fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d","versionType":"git"},{"version":"49bd49f983b5026e4557d31c5d737d9657c4113e","status":"affected","lessThan":"30b2d7f8f13664655480d6af45f60270b3eb6736","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/smb2pdu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.0.6","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":["fs/cifs/smb2pdu.c"]}],"references":["https://git.kernel.org/stable/c/fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d","https://git.kernel.org/stable/c/30b2d7f8f13664655480d6af45f60270b3eb6736"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50372.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50372","state":"PUBLISHED","datePublished":"2025-09-17T14:56:27.577Z","dateUpdated":"2026-05-11T19:18:16.908Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-17T14:53:06.995Z"},"containers":{"cna":{"title":"cifs: Fix memory leak when build ntlmssp negotiate blob failed","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak when build ntlmssp negotiate blob failed\n\nThere is a memory leak when mount cifs:\n  unreferenced object 0xffff888166059600 (size 448):\n    comm \"mount.cifs\", pid 51391, jiffies 4295596373 (age 330.596s)\n    hex dump (first 32 bytes):\n      fe 53 4d 42 40 00 00 00 00 00 00 00 01 00 82 00  .SMB@...........\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [<0000000060609a61>] mempool_alloc+0xe1/0x260\n      [<00000000adfa6c63>] cifs_small_buf_get+0x24/0x60\n      [<00000000ebb404c7>] __smb2_plain_req_init+0x32/0x460\n      [<00000000bcf875b4>] SMB2_sess_alloc_buffer+0xa4/0x3f0\n      [<00000000753a2987>] SMB2_sess_auth_rawntlmssp_negotiate+0xf5/0x480\n      [<00000000f0c1f4f9>] SMB2_sess_setup+0x253/0x410\n      [<00000000a8b83303>] cifs_setup_session+0x18f/0x4c0\n      [<00000000854bd16d>] cifs_get_smb_ses+0xae7/0x13c0\n      [<000000006cbc43d9>] mount_get_conns+0x7a/0x730\n      [<000000005922d816>] cifs_mount+0x103/0xd10\n      [<00000000e33def3b>] cifs_smb3_do_mount+0x1dd/0xc90\n      [<0000000078034979>] smb3_get_tree+0x1d5/0x300\n      [<000000004371f980>] vfs_get_tree+0x41/0xf0\n      [<00000000b670d8a7>] path_mount+0x9b3/0xdd0\n      [<000000005e839a7d>] __x64_sys_mount+0x190/0x1d0\n      [<000000009404c3b9>] do_syscall_64+0x35/0x80\n\nWhen build ntlmssp negotiate blob failed, the session setup request\nshould be freed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"49bd49f983b5026e4557d31c5d737d9657c4113e","status":"affected","lessThan":"fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d","versionType":"git"},{"version":"49bd49f983b5026e4557d31c5d737d9657c4113e","status":"affected","lessThan":"30b2d7f8f13664655480d6af45f60270b3eb6736","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cifs/smb2pdu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.0.6","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":["fs/cifs/smb2pdu.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/fa5a70bdd5e565c8696fb04dfe18a4e8aff4695d"},{"url":"https://git.kernel.org/stable/c/30b2d7f8f13664655480d6af45f60270b3eb6736"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:18:16.908Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.0.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","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":{"id":"CVE-2022-50372","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T18:36:31.603396Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T18:43:00.339Z"}}]}}}