CVE-2024-26582 net: tls: fix use-after-free with partial reads and async decrypt

2024-02-2114:59:11

Linux

github.com

cve-2024-26582

net

tls

use-after-free

partial reads

async decrypt

linux kernel

AI Score

7.2

Confidence

High

SSVC

Exploitation

none

Automatable

Technical Impact

total

JSON

In the Linux kernel, the following vulnerability has been resolved:

net: tls: fix use-after-free with partial reads and async decrypt

tls_decrypt_sg doesn’t take a reference on the pages from clear_skb,
so the put_page() in tls_decrypt_done releases them, and we trigger
a use-after-free in process_rx_list when we try to read from the
partially-read skb.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/tls/tls_sw.c"
    ],
    "versions": [
      {
        "version": "fd31f3996af2",
        "lessThan": "20b4ed034872",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fd31f3996af2",
        "lessThan": "d684763534b9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fd31f3996af2",
        "lessThan": "754c9bab77a1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fd31f3996af2",
        "lessThan": "32b55c5ff910",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/tls/tls_sw.c"
    ],
    "versions": [
      {
        "version": "6.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.0",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.79",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.18",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.6",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]