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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade bpftoolUpgrade kernel-livepatch-5.10.112-108.499Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade perfUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-headersUpgrade perf-debuginfoUpgrade python-perfUpgrade bpftool-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64 | May 22, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel | Jul 1, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-azureUpgrade linux-gcpUpgrade linux-lowlatencyUpgrade linux-aws-fipsUpgrade linux-intel-iotgUpgrade linux-fipsUpgrade linux-ibmUpgrade linux-azure-5.15Upgrade linux-hwe-5.4Upgrade linux-azure-5.4Upgrade linux-gcp-5.4Upgrade linux-gcp-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-azure-fipsUpgrade linux-hwe-5.15Upgrade linux-kvmUpgrade linux-iotUpgrade linux-oracleUpgrade linuxUpgrade linux-oracle-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-raspiUpgrade linux-gkeUpgrade linux-ibm-5.4Upgrade linux-realtimeUpgrade linux-aws-5.4Upgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linux-aws | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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