CVE-2024-41006netrom: Fix a memory leak in nr_heartbeat_expiry()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: netrom: Fix a memory leak in nr_heartbeat_expiry() syzbot reported a memory leak in nr_create() [0]. Commit 409db27e3a2e ("netrom: Fix use-after-free of a listening socket.") added sock_hold() to the nr_heartbeat_expiry() function, where a) a socket has a SOCK_DESTROY flag or b) a listening socket has a SOCK_DEAD flag. But in the case "a," when the SOCK_DESTROY flag is set, the file descriptor has already been closed and the nr_release() function has been called. So it makes no sense to hold the reference count because no one will call another nr_destroy_socket() and put it as in the case "b." nr_connect nr_establish_data_link nr_start_heartbeat nr_release switch (nr->state) case NR_STATE_3 nr->state = NR_STATE_2 sock_set_flag(sk, SOCK_DESTROY); nr_rx_frame nr_process_rx_frame switch (nr->state) case NR_STATE_2 nr_state2_machine() nr_disconnect() nr_sk(sk)->state = NR_STATE_0 sock_set_flag(sk, SOCK_DEAD) nr_heartbeat_expiry switch (nr->state) case NR_STATE_0 if (sock_flag(sk, SOCK_DESTROY) || (sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) sock_hold() // ( !!! ) nr_destroy_socket() To fix the memory leak, let's call sock_hold() only for a listening socket. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller. [0]: https://syzkaller.appspot.com/bug?extid=d327a1f3b12e1e206c16
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from a31caf5779ace8fa98b0d454133808e082ee7a1b before d616876256b38ecf9a1a1c7d674192c5346bc69c; from fe9b9e621cebe6b7e83f7e954c70f8bb430520e5 before e07a9c2a850cdebf625e7a1b8171bd23a8554313; from 7de16d75b20ab13b75a7291f449a1b00090edfea before 5391f9db2cab5ef1cb411be1ab7dbec728078fba; from d2d3ab1b1de3302de2c85769121fd4f890e47ceb before 280cf1173726a7059b628c610c71050d5c0b6937; from 51e394c6f81adbfe7c34d15f58b3d4d44f144acf before a02fd5d775cf9787ee7698c797e20f2fa13d2e2b; from 409db27e3a2eb5e8ef7226ca33be33361b3ed1c9 before b6ebe4fed73eedeb73f4540f8edc4871945474c8; from 409db27e3a2eb5e8ef7226ca33be33361b3ed1c9 before d377f5a28332954b19e373d36823e59830ab1712; 409db27e3a2eb5e8ef7226ca33be33361b3ed1c9 builds before 0b9130247f3b6a1122478471ff0e014ea96bb735; and 7 more ranges | CNA record |
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name) | before V3.1 | CISA ADP |
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name) | all versions not affected | CISA ADP |
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name) | before V3.1 | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 4.19.272 before 4.19.317; from 5.4.231 before 5.4.279; from 5.10.166 before 5.10.221; from 5.15.91 before 5.15.162; from 6.1.9 before 6.1.96; from 6.2 before 6.6.36; from 6.7 before 6.9.7; 6.10; and 3 more ranges | NVD |
References
- https://git.kernel.org/stable/c/d616876256b38ecf9a1a1c7d674192c5346bc69cmailing-list, patch
- https://git.kernel.org/stable/c/e07a9c2a850cdebf625e7a1b8171bd23a8554313mailing-list, patch
- https://git.kernel.org/stable/c/5391f9db2cab5ef1cb411be1ab7dbec728078fbamailing-list, patch
- https://git.kernel.org/stable/c/280cf1173726a7059b628c610c71050d5c0b6937mailing-list, patch
- https://git.kernel.org/stable/c/a02fd5d775cf9787ee7698c797e20f2fa13d2e2bmailing-list, patch
- https://git.kernel.org/stable/c/b6ebe4fed73eedeb73f4540f8edc4871945474c8mailing-list, patch
- https://git.kernel.org/stable/c/d377f5a28332954b19e373d36823e59830ab1712mailing-list, patch
- https://git.kernel.org/stable/c/0b9130247f3b6a1122478471ff0e014ea96bb735mailing-list, patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.