{"id":"CVE-2021-46960","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Return correct error code from smb2_get_enc_key\n\nAvoid a warning if the error percolates back up:\n\n[440700.376476] CIFS VFS: \\\\otters.example.com crypt_message: C…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Return correct error code from smb2_get_enc_key\n\nAvoid a warning if the error percolates back up:\n\n[440700.376476] CIFS VFS: \\\\otters.example.com crypt_message: C…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.11, < 4.14.233","linux_kernel >= 4.15, < 4.19.191","linux_kernel >= 4.20, < 5.4.118","linux_kernel >= 5.5, < 5.10.36","linux_kernel >= 5.11, < 5.11.20","linux_kernel >= 5.12, < 5.12.3"],"patched":["linux_kernel 5.12.3"],"published":"2024-02-27","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-46960","references":[{"url":"https://git.kernel.org/stable/c/83728cbf366e334301091d5b808add468ab46b27","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/93f3339b22ba17e66f0808737467b70ba087eaec","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aaa0faa5c28a91c362352d6b35dc3ed10df56fb0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b399c1a3ea0b9d10047ff266d65533df7f15532f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e486f8397f3f14a7cadc166138141fdb14379a54","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e94851629c49c65b4fbb29a5725ddfd7988f8f20","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f59a9242942fef0de7b926e438ba4eae65d4b4dd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/83728cbf366e334301091d5b808add468ab46b27","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/93f3339b22ba17e66f0808737467b70ba087eaec","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/aaa0faa5c28a91c362352d6b35dc3ed10df56fb0","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/b399c1a3ea0b9d10047ff266d65533df7f15532f","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e486f8397f3f14a7cadc166138141fdb14379a54","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e94851629c49c65b4fbb29a5725ddfd7988f8f20","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/f59a9242942fef0de7b926e438ba4eae65d4b4dd","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00633,"epssPercentile":0.4812,"ingestedAt":"2026-08-04T10:39:38.557Z","slug":"CVE-2021-46960","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Return correct error code from smb2_get_enc_key\n\nAvoid a warning if the error percolates back up:\n\n[440700.376476] CIFS VFS: \\\\otters.example.com crypt_message: Could not get encryption key\n[440700.386947] ------------[ cut here ]------------\n[440700.386948] err = 1\n[440700.386977] WARNING: CPU: 11 PID: 2733 at /build/linux-hwe-5.4-p6lk6L/linux-hwe-5.4-5.4.0/lib/errseq.c:74 errseq_set+0x5c/0x70\n...\n[440700.397304] CPU: 11 PID: 2733 Comm: tar Tainted: G           OE     5.4.0-70-generic #78~18.04.1-Ubuntu\n...\n[440700.397334] Call Trace:\n[440700.397346]  __filemap_set_wb_err+0x1a/0x70\n[440700.397419]  cifs_writepages+0x9c7/0xb30 [cifs]\n[440700.397426]  do_writepages+0x4b/0xe0\n[440700.397444]  __filemap_fdatawrite_range+0xcb/0x100\n[440700.397455]  filemap_write_and_wait+0x42/0xa0\n[440700.397486]  cifs_setattr+0x68b/0xf30 [cifs]\n[440700.397493]  notify_change+0x358/0x4a0\n[440700.397500]  utimes_common+0xe9/0x1c0\n[440700.397510]  do_utimes+0xc5/0x150\n[440700.397520]  __x64_sys_utimensat+0x88/0xd0\n\n## Affected\n\n- `linux_kernel >= 4.11, < 4.14.233`\n- `linux_kernel >= 4.15, < 4.19.191`\n- `linux_kernel >= 4.20, < 5.4.118`\n- `linux_kernel >= 5.5, < 5.10.36`\n- `linux_kernel >= 5.11, < 5.11.20`\n- `linux_kernel >= 5.12, < 5.12.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.12.3`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}