Vulnerability-Lookup

alsa-2026:33285

Vulnerability from osv_almalinux

Published

2026-06-29 00:00

Modified

2026-07-01 10:27

Summary

Important: kernel security, bug fix, and enhancement update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() (CVE-2026-31411)
kernel: tcp: fix potential race in tcp_v6_syn_recv_sock() (CVE-2026-43198)

Bug Fix(es) and Enhancement(s):

[AlmaLinux 9.8 Bug] qla2xxx flash image validation failure [almalinux-9.8.z] (JIRA:AlmaLinux-181886)
crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode [almalinux-9.8.z] (JIRA:AlmaLinux-182540)
tegra-se fixes and updates [almalinux-9.8.z] (JIRA:AlmaLinux-182760)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:33285	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-31411	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43198	REPORT
	https://bugzilla.redhat.com/2456521	REPORT
	https://bugzilla.redhat.com/2467228	REPORT
	https://errata.almalinux.org/9/ALSA-2026-33285.html	ADVISORY

JSON

To clipboard

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  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.  \n\nSecurity Fix(es):  \n\n  * kernel: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() (CVE-2026-31411)\n  * kernel: tcp: fix potential race in tcp_v6_syn_recv_sock() (CVE-2026-43198)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * [AlmaLinux 9.8 Bug] qla2xxx flash image validation failure [almalinux-9.8.z] (JIRA:AlmaLinux-181886)\n  * crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode [almalinux-9.8.z] (JIRA:AlmaLinux-182540)\n  * tegra-se fixes and updates [almalinux-9.8.z] (JIRA:AlmaLinux-182760)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:33285",
  "modified": "2026-07-01T10:27:21Z",
  "published": "2026-06-29T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:33285"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31411"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43198"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2456521"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467228"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-33285.html"
    }
  ],
  "related": [
    "CVE-2026-31411",
    "CVE-2026-43198"
  ],
  "summary": "Important: kernel security, bug fix, and enhancement update"
}

CVE-2026-31411 (GCVE-0-2026-31411)

Vulnerability from cvelistv5 – Published: 2026-04-08 13:06 – Updated: 2026-05-11 22:08

Title

net: atm: fix crash due to unvalidated vcc pointer in sigd_send()

Summary

In the Linux kernel, the following vulnerability has been resolved: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() Reproducer available at [1]. The ATM send path (sendmsg -> vcc_sendmsg -> sigd_send) reads the vcc pointer from msg->vcc and uses it directly without any validation. This pointer comes from userspace via sendmsg() and can be arbitrarily forged: int fd = socket(AF_ATMSVC, SOCK_DGRAM, 0); ioctl(fd, ATMSIGD_CTRL); // become ATM signaling daemon struct msghdr msg = { .msg_iov = &iov, ... }; *(unsigned long *)(buf + 4) = 0xdeadbeef; // fake vcc pointer sendmsg(fd, &msg, 0); // kernel dereferences 0xdeadbeef In normal operation, the kernel sends the vcc pointer to the signaling daemon via sigd_enq() when processing operations like connect(), bind(), or listen(). The daemon is expected to return the same pointer when responding. However, a malicious daemon can send arbitrary pointer values. Fix this by introducing find_get_vcc() which validates the pointer by searching through vcc_hash (similar to how sigd_close() iterates over all VCCs), and acquires a reference via sock_hold() if found. Since struct atm_vcc embeds struct sock as its first member, they share the same lifetime. Therefore using sock_hold/sock_put is sufficient to keep the vcc alive while it is being used. Note that there may be a race with sigd_close() which could mark the vcc with various flags (e.g., ATM_VF_RELEASED) after find_get_vcc() returns. However, sock_hold() guarantees the memory remains valid, so this race only affects the logical state, not memory safety. [1]: https://gist.github.com/mrpre/1ba5949c45529c511152e2f4c755b0f3

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/c96549d07dfdd51aa…
https://git.kernel.org/stable/c/1c8bda3df028d5e54…
https://git.kernel.org/stable/c/3e1a8b00095246a9a…
https://git.kernel.org/stable/c/e3f80666c2739296c…
https://git.kernel.org/stable/c/21c303fec138c002f…
https://git.kernel.org/stable/c/69d3f9ee5489e6e8b…
https://git.kernel.org/stable/c/440c9a5fc477a8ee2…
https://git.kernel.org/stable/c/ae88a5d2f29b69819…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c96549d07dfdd51aadf0722cfb40711574424840 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1c8bda3df028d5e54134077dcd09f46ca8cfceb5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3e1a8b00095246a9a2b46b57f6d471c6d3c00ed2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e3f80666c2739296c3b69a127300455c43aa1067 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 21c303fec138c002f90ed33bce60e807d53072bb (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 69d3f9ee5489e6e8b66defcfa226e91d82393297 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 440c9a5fc477a8ee259d8bf669531250b8398651 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ae88a5d2f29b69819dc7b04086734439d074a643 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.252 , ≤ 5.10.* (semver) Unaffected: 5.15.202 , ≤ 5.15.* (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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          "url": "https://git.kernel.org/stable/c/21c303fec138c002f90ed33bce60e807d53072bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/69d3f9ee5489e6e8b66defcfa226e91d82393297"
        },
        {
          "url": "https://git.kernel.org/stable/c/440c9a5fc477a8ee259d8bf669531250b8398651"
        },
        {
          "url": "https://git.kernel.org/stable/c/ae88a5d2f29b69819dc7b04086734439d074a643"
        }
      ],
      "title": "net: atm: fix crash due to unvalidated vcc pointer in sigd_send()",
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        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31411",
    "datePublished": "2026-04-08T13:06:17.800Z",
    "dateReserved": "2026-03-09T15:48:24.087Z",
    "dateUpdated": "2026-05-11T22:08:11.432Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-43198 (GCVE-0-2026-43198)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-07-02 12:05

Title

tcp: fix potential race in tcp_v6_syn_recv_sock()

Summary

In the Linux kernel, the following vulnerability has been resolved: tcp: fix potential race in tcp_v6_syn_recv_sock() Code in tcp_v6_syn_recv_sock() after the call to tcp_v4_syn_recv_sock() is done too late. After tcp_v4_syn_recv_sock(), the child socket is already visible from TCP ehash table and other cpus might use it. Since newinet->pinet6 is still pointing to the listener ipv6_pinfo bad things can happen as syzbot found. Move the problematic code in tcp_v6_mapped_child_init() and call this new helper from tcp_v4_syn_recv_sock() before the ehash insertion. This allows the removal of one tcp_sync_mss(), since tcp_v4_syn_recv_sock() will call it with the correct context.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-821 - Incorrect Synchronization

Assigner

Linux

References

11 references

URL	Tags
https://git.kernel.org/stable/c/fe89b2f05b8548477…
https://git.kernel.org/stable/c/7178e2a8027423b2a…
https://git.kernel.org/stable/c/858d2a4f67ff69e64…
https://access.redhat.com/security/cve/CVE-2026-43198	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2467228	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:33215	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30129	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34443	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34094	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33285	vendor-advisoryx_refsource_REDHAT

Impacted products

30 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fe89b2f05b854847784f91127319172945c1fadd (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7178e2a8027423b2af17ab95df73a749a5b72e5b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 858d2a4f67ff69e645a43487ef7ea7f28f06deae (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux AppStream EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux AppStream (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux AppStream E4S (v.9.4)	cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat	Red Hat Enterprise Linux AppStream EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat	Red Hat Enterprise Linux AppStream (v. 9)	cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux BaseOS EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux BaseOS (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux BaseOS E4S (v.9.4)	cpe:/o:redhat:rhel_e4s:9.4::baseos
Red Hat	Red Hat Enterprise Linux BaseOS EUS (v.9.6)	cpe:/o:redhat:rhel_eus:9.6::baseos
Red Hat	Red Hat Enterprise Linux BaseOS (v. 9)	cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat CodeReady Linux Builder EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::crb
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)	cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)	cpe:/a:redhat:rhel_e4s:9.4::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::nfv
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 9)	cpe:/a:redhat:enterprise_linux:9::nfv
Red Hat	Red Hat Enterprise Linux Real Time EUS (v. 10.0)	cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux Real Time (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux Real Time E4S (v.9.4)	cpe:/a:redhat:rhel_e4s:9.4::realtime
Red Hat	Red Hat Enterprise Linux Real Time EUS (v.9.6)	cpe:/a:redhat:rhel_eus:9.6::realtime
Red Hat	Red Hat Enterprise Linux Real Time (v. 9)	cpe:/a:redhat:enterprise_linux:9::realtime
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6

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To clipboard

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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: fix potential race in tcp_v6_syn_recv_sock()\n\nCode in tcp_v6_syn_recv_sock() after the call to tcp_v4_syn_recv_sock()\nis done too late.\n\nAfter tcp_v4_syn_recv_sock(), the child socket is already visible\nfrom TCP ehash table and other cpus might use it.\n\nSince newinet-\u003epinet6 is still pointing to the listener ipv6_pinfo\nbad things can happen as syzbot found.\n\nMove the problematic code in tcp_v6_mapped_child_init()\nand call this new helper from tcp_v4_syn_recv_sock() before\nthe ehash insertion.\n\nThis allows the removal of one tcp_sync_mss(), since\ntcp_v4_syn_recv_sock() will call it with the correct\ncontext."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:19:44.515Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fe89b2f05b854847784f91127319172945c1fadd"
        },
        {
          "url": "https://git.kernel.org/stable/c/7178e2a8027423b2af17ab95df73a749a5b72e5b"
        },
        {
          "url": "https://git.kernel.org/stable/c/858d2a4f67ff69e645a43487ef7ea7f28f06deae"
        }
      ],
      "title": "tcp: fix potential race in tcp_v6_syn_recv_sock()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43198",
    "datePublished": "2026-05-06T11:28:05.569Z",
    "dateReserved": "2026-05-01T14:12:55.992Z",
    "dateUpdated": "2026-07-02T12:05:04.051Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2026:33285

Vulnerability from osv_almalinux

CVE-2026-31411 (GCVE-0-2026-31411)

CVE-2026-43198 (GCVE-0-2026-43198)

Tags

Sightings

Nomenclature