{"id":"CVE-2022-49094","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: fix slab-out-of-bounds bug in decrypt_internal\n\nThe memory size of tls_ctx->rx.iv for AES128-CCM is 12 setting in\ntls_set_sw_offload()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: fix slab-out-of-bounds bug in decrypt_internal\n\nThe memory size of tls_ctx->rx.iv for AES128-CCM is 12 setting in\ntls_set_sw_offload(). The return value of cry…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-125"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.2, < 5.4.189","linux_kernel >= 5.5, < 5.10.111","linux_kernel >= 5.11, < 5.15.34","linux_kernel >= 5.16, < 5.16.20","linux_kernel >= 5.17, < 5.17.3","linux_kernel = 5.18"],"patched":["linux_kernel 5.17.3"],"published":"2025-02-26","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:23.177","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-49094","references":[{"url":"https://git.kernel.org/stable/c/2304660ab6c425df64d95301b601424c6a50f28b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/29be1816cbab9a0dc6243120939fd10a92753756","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2b7d14c105dd8f6412eda5a91e1e6154653731e3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/589154d0f18945f41d138a5b4e49e518d294474b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6e2f1b033b17dedda51d465861b69e58317d6343","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9381fe8c849cfbe50245ac01fc077554f6eaa0e2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.0067,"epssPercentile":0.51768,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-15T21:17:38.615000Z"},"ingestedAt":"2026-10-15T21:45:11.291Z","slug":"CVE-2022-49094","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: fix slab-out-of-bounds bug in decrypt_internal\n\nThe memory size of tls_ctx->rx.iv for AES128-CCM is 12 setting in\ntls_set_sw_offload(). The return value of crypto_aead_ivsize()\nfor \"ccm(aes)\" is 16. So memcpy() require 16 bytes from 12 bytes\nmemory space will trigger slab-out-of-bounds bug as following:\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in decrypt_internal+0x385/0xc40 [tls]\nRead of size 16 at addr ffff888114e84e60 by task tls/10911\n\nCall Trace:\n <TASK>\n dump_stack_lvl+0x34/0x44\n print_report.cold+0x5e/0x5db\n ? decrypt_internal+0x385/0xc40 [tls]\n kasan_report+0xab/0x120\n ? decrypt_internal+0x385/0xc40 [tls]\n kasan_check_range+0xf9/0x1e0\n memcpy+0x20/0x60\n decrypt_internal+0x385/0xc40 [tls]\n ? tls_get_rec+0x2e0/0x2e0 [tls]\n ? process_rx_list+0x1a5/0x420 [tls]\n ? tls_setup_from_iter.constprop.0+0x2e0/0x2e0 [tls]\n decrypt_skb_update+0x9d/0x400 [tls]\n tls_sw_recvmsg+0x3c8/0xb50 [tls]\n\nAllocated by task 10911:\n kasan_save_stack+0x1e/0x40\n __kasan_kmalloc+0x81/0xa0\n tls_set_sw_offload+0x2eb/0xa20 [tls]\n tls_setsockopt+0x68c/0x700 [tls]\n __sys_setsockopt+0xfe/0x1b0\n\nReplace the crypto_aead_ivsize() with prot->iv_size + prot->salt_size\nwhen memcpy() iv value in TLS_1_3_VERSION scenario.\n\n## Affected\n\n- `linux_kernel >= 5.2, < 5.4.189`\n- `linux_kernel >= 5.5, < 5.10.111`\n- `linux_kernel >= 5.11, < 5.15.34`\n- `linux_kernel >= 5.16, < 5.16.20`\n- `linux_kernel >= 5.17, < 5.17.3`\n- `linux_kernel = 5.18`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.17.3`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}