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ipv6: prevent UAF in ip6_send_skb()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent UAF in ip6_send_skb() syzbot reported an UAF in ip6_send_skb() [1] After ip6_local_out() has returned, we no longer can safely dereference rt, unless we hold rcu_read_lock(). A similar issue has been fixed in commit a688caa34beb ("ipv6: take rcu lock in rawv6_send_hdrinc()") Another potential issue in ip6_finish_output2() is handled in a separate patch. [1] BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 Read of size 8 at addr ffff88806dde4858 by task syz.1.380/6530 CPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588 rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 sock_write_iter+0x2dd/0x400 net/socket.c:1160 do_iter_readv_writev+0x60a/0x890 vfs_writev+0x37c/0xbb0 fs/read_write.c:971 do_writev+0x1b1/0x350 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_sysca

Announced Source revision 1
Original source ↗

CVE-2024-44987

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2024-44987

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "571567e0277008459750f0728f246086b2659429",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "24e93695b1239fbe4c31e224372be77f82dab69a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "9a3e55afa95ed4ac9eda112d4f918af645d72f25",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "e44bd76dd072756e674f45c5be00153f4ded68b2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
        "lessThan": "faa389b2fbaaec7fd27a390b4896139f9da662e3",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ipv6/ip6_output.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.32"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.32",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.19.321",
        "versionType": "semver",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.283",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.225",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.166",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.107",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.48",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.10.7",
        "versionType": "semver",
        "lessThanOrEqual": "6.10.*"
      },
      {
        "status": "unaffected",
        "version": "6.11",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ipv6/ip6_output.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-44987

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#26703 · Revision 1
Added to Heist Feed
Publisher date
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