CVE-2022-49205 (GCVE-0-2022-49205)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:55
VLAI
Title
bpf, sockmap: Fix double uncharge the mem of sk_msg
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix double uncharge the mem of sk_msg If tcp_bpf_sendmsg is running during a tear down operation, psock may be freed. tcp_bpf_sendmsg() tcp_bpf_send_verdict() sk_msg_return() tcp_bpf_sendmsg_redir() unlikely(!psock)) sk_msg_free() The mem of msg has been uncharged in tcp_bpf_send_verdict() by sk_msg_return(), and would be uncharged by sk_msg_free() again. When psock is null, we can simply returning an error code, this would then trigger the sk_msg_free_nocharge in the error path of __SK_REDIRECT and would have the side effect of throwing an error up to user space. This would be a slight change in behavior from user side but would look the same as an error if the redirect on the socket threw an error. This issue can cause the following info: WARNING: CPU: 0 PID: 2136 at net/ipv4/af_inet.c:155 inet_sock_destruct+0x13c/0x260 Call Trace: <TASK> __sk_destruct+0x24/0x1f0 sk_psock_destroy+0x19b/0x1c0 process_one_work+0x1b3/0x3c0 worker_thread+0x30/0x350 ? process_one_work+0x3c0/0x3c0 kthread+0xe6/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30 </TASK>
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 94c6ac22abcdede72bfaa0f4c22fb370891f4002 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < cd84ea3920aef936c559b63099ef0013ce6b2325 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < cb6f141ae705af0101e819065a79e6d029f6e393 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 223f3c51ab163852dd4819d357dcf33039929434 (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < ac3ecb7760c750c8e4fc09c719241d8e6e88028c (git)
Affected: 604326b41a6fb9b4a78b6179335decee0365cd8c , < 2486ab434b2c2a14e9237296db00b1e1b7ae3273 (git)
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Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf, sockmap: Se corrige la doble descarga de la memoria de sk_msg. Si tcp_bpf_sendmsg se est\u00e1 ejecutando durante una operaci\u00f3n de desmantelamiento, psock puede liberarse. tcp_bpf_sendmsg() tcp_bpf_send_verdict() sk_msg_return() tcp_bpf_sendmsg_redir() Unlikely(!psock)) sk_msg_free() La memoria de msg ha sido descargada en tcp_bpf_send_verdict() por sk_msg_return(), y ser\u00eda descargada nuevamente por sk_msg_free(). Cuando psock es nulo, podemos simplemente devolver un c\u00f3digo de error, esto activar\u00eda sk_msg_free_nocharge en la ruta de error de __SK_REDIRECT y tendr\u00eda el efecto secundario de arrojar un error al espacio del usuario. Esto ser\u00eda un ligero cambio en el comportamiento del lado del usuario, pero se ver\u00eda igual que un error si la redirecci\u00f3n en el socket arrojara un error. Este problema puede causar la siguiente informaci\u00f3n: ADVERTENCIA: CPU: 0 PID: 2136 en net/ipv4/af_inet.c:155 inet_sock_destruct+0x13c/0x260 Seguimiento de llamadas:  __sk_destruct+0x24/0x1f0 sk_psock_destroy+0x19b/0x1c0 process_one_work+0x1b3/0x3c0 worker_thread+0x30/0x350 ? process_one_work+0x3c0/0x3c0 kthread+0xe6/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30 "
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:01:15+00:00",
      "cve": "CVE-2022-49205",
      "id": "CVE-2022-49205",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "201",
      "product_status:known_affected": "70",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bpf, sockmap: Fix double uncharge the mem of sk_msg",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49205.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-21T00:54:22Z",
      "cve": "CVE-2022-49205",
      "id": "CVE-2022-49205",
      "initial_release_date": "2025-02-27T03:10:40Z",
      "product_status:known_affected": "536",
      "product_status:known_not_affected": "209",
      "product_status:recommended": "180",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49205",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2022-49205.json",
      "version": "47"
    }
  }
}



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Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.