CVE-2022-49592: net: stmmac: fix dma queue left shift overflow issue
Vulnerability summary
CVE-2022-49592 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 21% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 5Timeline
- 26-02-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix dma queue left shift overflow issue When queue number is > 4, left shift overflows due to 32 bits integer variable. Mask calculation is wrong for MTL_RXQ_DMA_MAP1. If CONFIG_UBSAN is enabled, kernel dumps below warning: [ 10.363842] ================================================================== [ 10.363882] UBSAN: shift-out-of-bounds in /build/linux-intel-iotg-5.15-8e6Tf4/ linux-intel-iotg-5.15-5.15.0/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c:224:12 [ 10.363929] shift exponent 40 is too large for 32-bit type 'unsigned int' [ 10.363953] CPU: 1 PID: 599 Comm: NetworkManager Not tainted 5.15.0-1003-intel-iotg [ 10.363956] Hardware name: ADLINK Technology Inc. LEC-EL/LEC-EL, BIOS 0.15.11 12/22/2021 [ 10.363958] Call Trace: [ 10.363960] <TASK> [ 10.363963] dump_stack_lvl+0x4a/0x5f [ 10.363971] dump_stack+0x10/0x12 [ 10.363974] ubsan_epilogue+0x9/0x45 [ 10.363976] __ubsan_handle_shift_out_of_bounds.cold+0x61/0x10e [ 10.363979] ? wake_up_klogd+0x4a/0x50 [ 10.363983] ? vprintk_emit+0x8f/0x240 [ 10.363986] dwmac4_map_mtl_dma.cold+0x42/0x91 [stmmac] [ 10.364001] stmmac_mtl_configuration+0x1ce/0x7a0 [stmmac] [ 10.364009] ? dwmac410_dma_init_channel+0x70/0x70 [stmmac] [ 10.364020] stmmac_hw_setup.cold+0xf/0xb14 [stmmac] [ 10.364030] ? page_pool_alloc_pages+0x4d/0x70 [ 10.364034] ? stmmac_clear_tx_descriptors+0x6e/0xe0 [stmmac] [ 10.364042] stmmac_open+0x39e/0x920 [stmmac] [ 10.364050] __dev_open+0xf0/0x1a0 [ 10.364054] __dev_change_flags+0x188/0x1f0 [ 10.364057] dev_change_flags+0x26/0x60 [ 10.364059] do_setlink+0x908/0xc40 [ 10.364062] ? do_setlink+0xb10/0xc40 [ 10.364064] ? __nla_validate_parse+0x4c/0x1a0 [ 10.364068] __rtnl_newlink+0x597/0xa10 [ 10.364072] ? __nla_reserve+0x41/0x50 [ 10.364074] ? __kmalloc_node_track_caller+0x1d0/0x4d0 [ 10.364079] ? pskb_expand_head+0x75/0x310 [ 10.364082] ? nla_reserve_64bit+0x21/0x40 [ 10.364086] ? skb_free_head+0x65/0x80 [ 10.364089] ? security_sock_rcv_skb+0x2c/0x50 [ 10.364094] ? __cond_resched+0x19/0x30 [ 10.364097] ? kmem_cache_alloc_trace+0x15a/0x420 [ 10.364100] rtnl_newlink+0x49/0x70 This change fixes MTL_RXQ_DMA_MAP1 mask issue and channel/queue mapping warning. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216195
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu110 products
- linux< 4.15.0-197.208 | < 5.4.0-128.144 | < 5.15.0-50.56
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.15.0-1143.155 | < 5.4.0-1086.93 | < 5.15.0-1021.25
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ d43042f4da3e1c2e4ccac3b1d9153cb0798533a4, < ad2febdfbd01e1d092a08bfdba92ede79ea05ff3 | ≥ d43042f4da3e1c2e4ccac3b1d9153cb0798533a4, < 508d86ead36cbd8dfb60773a33276790d668c473 | ≥ d43042f4da3e1c2e4ccac3b1d9153cb0798533a4, < 573768dede0e2b7de38ecbc11cb3ee47643902dc | ≥ d43042f4da3e1c2e4ccac3b1d9153cb0798533a4, < a3ac79f38d354b10925824899cdbd2caadce55ba | ≥ d43042f4da3e1c2e4ccac3b1d9153cb0798533a4, < 7c687a893f5cae5ca40d189635602e93af9bab73 | ≥ d43042f4da3e1c2e4ccac3b1d9153cb0798533a4, < e846bde09677fa3b203057846620b7ed96540f5f | ≥ d43042f4da3e1c2e4ccac3b1d9153cb0798533a4, < 613b065ca32e90209024ec4a6bb5ca887ee70980 | 4.12
- linux_kernel≥ 4.12, < 4.14.290 | ≥ 4.15, < 4.19.254 | ≥ 4.20, < 5.4.208 | ≥ 5.5, < 5.10.134 | ≥ 5.11, < 5.15.58 | ≥ 5.16, < 5.18.15 | 5.19:rc1 | 5.19:rc2 | 5.19:rc3 | 5.19:rc4 | 5.19:rc5 | 5.19:rc6 | 5.19:rc7
Debian1 product
- linux< 5.18.16-1
3 vendors · 113 products
