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CVE-2024-41006— netrom: Fix a memory leak in nr_heartbeat_expiry()

EPSS 0.02% · P6

Affected Version Matrix 19

VendorProductVersion RangeStatus
LinuxLinuxa31caf5779ace8fa98b0d454133808e082ee7a1b< d616876256b38ecf9a1a1c7d674192c5346bc69caffected
fe9b9e621cebe6b7e83f7e954c70f8bb430520e5< e07a9c2a850cdebf625e7a1b8171bd23a8554313affected
7de16d75b20ab13b75a7291f449a1b00090edfea< 5391f9db2cab5ef1cb411be1ab7dbec728078fbaaffected
d2d3ab1b1de3302de2c85769121fd4f890e47ceb< 280cf1173726a7059b628c610c71050d5c0b6937affected
51e394c6f81adbfe7c34d15f58b3d4d44f144acf< a02fd5d775cf9787ee7698c797e20f2fa13d2e2baffected
409db27e3a2eb5e8ef7226ca33be33361b3ed1c9< b6ebe4fed73eedeb73f4540f8edc4871945474c8affected
409db27e3a2eb5e8ef7226ca33be33361b3ed1c9< d377f5a28332954b19e373d36823e59830ab1712affected
409db27e3a2eb5e8ef7226ca33be33361b3ed1c9< 0b9130247f3b6a1122478471ff0e014ea96bb735affected
… +11 more rows
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I. Basic Information for CVE-2024-41006

Vulnerability Information
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Vulnerability Title
netrom: Fix a memory leak in nr_heartbeat_expiry()
Source: NVD (National Vulnerability Database)
Vulnerability Description
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
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 netrom 组件在 nr_heartbeat_expiry 函数中存在内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux a31caf5779ace8fa98b0d454133808e082ee7a1b ~ d616876256b38ecf9a1a1c7d674192c5346bc69c -
LinuxLinux 6.2 -

II. Public POCs for CVE-2024-41006

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III. Intelligence Information for CVE-2024-41006

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Same Patch Batch · Linux · 2024-07-12 · 122 CVEs total

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CVE-2024-40972ext4: do not create EA inode under buffer lock
CVE-2024-40970Avoid hw_desc array overrun in dw-axi-dmac
CVE-2024-40971f2fs: remove clear SB_INLINECRYPT flag in default_options
CVE-2024-40969f2fs: don't set RO when shutting down f2fs
CVE-2024-40967serial: imx: Introduce timeout when waiting on transmitter empty
CVE-2024-40968MIPS: Octeon: Add PCIe link status check
CVE-2024-40966tty: add the option to have a tty reject a new ldisc
CVE-2024-40965i2c: lpi2c: Avoid calling clk_get_rate during transfer
CVE-2024-40964ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()
CVE-2024-40963mips: bmips: BCM6358: make sure CBR is correctly set
CVE-2024-40961ipv6: prevent possible NULL deref in fib6_nh_init()
CVE-2024-40962btrfs: zoned: allocate dummy checksums for zoned NODATASUM writes
CVE-2024-40960ipv6: prevent possible NULL dereference in rt6_probe()
CVE-2024-40950mm: huge_memory: fix misused mapping_large_folio_support() for anon folios
CVE-2024-40949mm: shmem: fix getting incorrect lruvec when replacing a shmem folio
CVE-2024-40947ima: Avoid blocking in RCU read-side critical section
CVE-2024-40951ocfs2: fix NULL pointer dereference in ocfs2_abort_trigger()

Showing top 20 of 122 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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