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udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated().

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated(). syzbot reported [0] a null-ptr-deref in sk_get_rmem0() while using IPPROTO_UDPLITE (0x88): 14:25:52 executing program 1: r0 = socket$inet6(0xa, 0x80002, 0x88) We had a similar report [1] for probably sk_memory_allocated_add() in __sk_mem_raise_allocated(), and commit c915fe13cbaa ("udplite: fix NULL pointer dereference") fixed it by setting .memory_allocated for udplite_prot and udplitev6_prot. To fix the variant, we need to set either .sysctl_wmem_offset or .sysctl_rmem. Now UDP and UDPLITE share the same value for .memory_allocated, so we use the same .sysctl_wmem_offset for UDP and UDPLITE. [0]: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 6829 Comm: syz-executor.1 Not tainted 6.4.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:sk_get_rmem0 include/net/sock.h:2907 [inline] RIP: 0010:__sk_mem_raise_allocated+0x806/0x17a0 net/core/sock.c:3006 Code: c1 ea 03 80 3c 02 00 0f 85 23 0f 00 00 48 8b 44 24 08 48 8b 98 38 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 0f 8d 6f 0a 00 00 8b RSP: 0018:ffffc90005d7f450 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 R

Announced Source revision 1
Original source ↗

CVE-2023-54004

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-2023-54004

Linux

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

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
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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": "850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9",
        "lessThan": "cc56de054d828935aa37734b479f82fa34b5f9bd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9",
        "lessThan": "7e3ae83371a4809da6fa3f10ccc430eecef3034a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9",
        "lessThan": "5014b64e369bdf997935b132a1ac4d64b6e47ad4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9",
        "lessThan": "387bd0a3af3bdd2b16f8dbef0c9fcccac63000a4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9",
        "lessThan": "2a112f04629f7839e7cb509b27b8d3b735afe255",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9",
        "lessThan": "f04c8eaf45e7dcdfccba936506b1ec592a369fb9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "850cbaddb52dfd4e0c7cabe2c168dd34b44ae0b9",
        "lessThan": "ad42a35bdfc6d3c0fc4cb4027d7b2757ce665665",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ipv4/udplite.c",
      "net/ipv6/udplite.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.10"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.10",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.19.284",
        "versionType": "semver",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.244",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.181",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.114",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.31",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.3.5",
        "versionType": "semver",
        "lessThanOrEqual": "6.3.*"
      },
      {
        "status": "unaffected",
        "version": "6.4",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ipv4/udplite.c",
      "net/ipv6/udplite.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2023-54004

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30333 · Revision 1
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Publisher date
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