CVE-2022-49094
net/tls: fix slab-out-of-bounds bug in decrypt_internal
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: net/tls: fix slab-out-of-bounds bug in decrypt_internal The memory size of tls_ctx->rx.iv for AES128-CCM is 12 setting in tls_set_sw_offload(). The return value of crypto_aead_ivsize() for "ccm(aes)" is 16. So memcpy() require 16 bytes from 12 bytes memory space will trigger slab-out-of-bounds bug as following: ================================================================== BUG: KASAN: slab-out-of-bounds in decrypt_internal+0x385/0xc40 [tls] Read of size 16 at addr ffff888114e84e60 by task tls/10911 Call Trace: <TASK> dump_stack_lvl+0x34/0x44 print_report.cold+0x5e/0x5db ? decrypt_internal+0x385/0xc40 [tls] kasan_report+0xab/0x120 ? decrypt_internal+0x385/0xc40 [tls] kasan_check_range+0xf9/0x1e0 memcpy+0x20/0x60 decrypt_internal+0x385/0xc40 [tls] ? tls_get_rec+0x2e0/0x2e0 [tls] ? process_rx_list+0x1a5/0x420 [tls] ? tls_setup_from_iter.constprop.0+0x2e0/0x2e0 [tls] decrypt_skb_update+0x9d/0x400 [tls] tls_sw_recvmsg+0x3c8/0xb50 [tls] Allocated by task 10911: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 tls_set_sw_offload+0x2eb/0xa20 [tls] tls_setsockopt+0x68c/0x700 [tls] __sys_setsockopt+0xfe/0x1b0 Replace the crypto_aead_ivsize() with prot->iv_size + prot->salt_size when memcpy() iv value in TLS_1_3_VERSION scenario.
Timeline
ID reserved
By Linux
Published
- 20 months later
· 20 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.67% · top 48% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- affected f295b3ae9f5927e084bd5decdff82390e3471801 – < 2b7d14c105dd8f6412eda5a91e1e6154653731e3
- affected f295b3ae9f5927e084bd5decdff82390e3471801 – < 589154d0f18945f41d138a5b4e49e518d294474b
- affected f295b3ae9f5927e084bd5decdff82390e3471801 – < 6e2f1b033b17dedda51d465861b69e58317d6343
- affected f295b3ae9f5927e084bd5decdff82390e3471801 – < 29be1816cbab9a0dc6243120939fd10a92753756
- affected f295b3ae9f5927e084bd5decdff82390e3471801 – < 2304660ab6c425df64d95301b601424c6a50f28b
- affected f295b3ae9f5927e084bd5decdff82390e3471801 – < 9381fe8c849cfbe50245ac01fc077554f6eaa0e2
- affected 5.2
- unaffected < 5.2
- unaffected 5.4.189 – ≤ 5.4.*
- unaffected 5.10.111 – ≤ 5.10.*
- unaffected 5.15.34 – ≤ 5.15.*
- unaffected 5.16.20 – ≤ 5.16.*
- unaffected 5.17.3 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (6)
- https://git.kernel.org/stable/c/2b7d14c105dd8f6412eda5a91e1e6154653731e3 (opens in a new tab)
- https://git.kernel.org/stable/c/589154d0f18945f41d138a5b4e49e518d294474b (opens in a new tab)
- https://git.kernel.org/stable/c/6e2f1b033b17dedda51d465861b69e58317d6343 (opens in a new tab)
- https://git.kernel.org/stable/c/29be1816cbab9a0dc6243120939fd10a92753756 (opens in a new tab)
- https://git.kernel.org/stable/c/2304660ab6c425df64d95301b601424c6a50f28b (opens in a new tab)
- https://git.kernel.org/stable/c/9381fe8c849cfbe50245ac01fc077554f6eaa0e2 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49094)Record last updated .