# CVE-2022-48803: linux: In the Linux kernel, the following vulnerability has been resolved:  phy: ti: Fix missing sentinel for clk_div_table...

CVE-2022-48803 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48803, released July 16, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48803
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0030
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 16, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  phy: ti: Fix missing sentinel for clk_div_table  _get_table_maxdiv() tries to access "clk_div_table" array out of bound defined in phy-j721e-wiz.c. Add a sentinel entry to prevent the following global-out-of-bounds error reported by enabling KASAN.  [    9.552392] BUG: KASAN: global-out-of-bounds in _get_maxdiv+0xc0/0x148 [    9.558948] Read of size 4 at addr ffff8000095b25a4 by task kworker/u4:1/38 [    9.565926] [    9.567441] CPU: 1 PID: 38 Comm: kworker/u4:1 Not tainted 5.16.0-116492-gdaadb3bd0e8d-dirty #360 [    9.576242] Hardware name: Texas Instruments J721e EVM (DT) [    9.581832] Workqueue: events_unbound deferred_probe_work_func [    9.587708] Call trace: [    9.590174]  dump_backtrace+0x20c/0x218 [    9.594038]  show_stack+0x18/0x68 [    9.597375]  dump_stack_lvl+0x9c/0xd8 [    9.601062]  print_address_description.constprop.0+0x78/0x334 [    9.606830]  kasan_report+0x1f0/0x260 [    9.610517]  __asan_load4+0x9c/0xd8 [    9.614030]  _get_maxdiv+0xc0/0x148 [    9.617540]  divider_determine_rate+0x88/0x488 [    9.622005]  divider_round_rate_parent+0xc8/0x124 [    9.626729]  wiz_clk_div_round_rate+0x54/0x68 [    9.631113]  clk_core_determine_round_nolock+0x124/0x158 [    9.636448]  clk_core_round_rate_nolock+0x68/0x138 [    9.641260]  clk_core_set_rate_nolock+0x268/0x3a8 [    9.645987]  clk_set_rate+0x50/0xa8 [    9.649499]  cdns_sierra_phy_init+0x88/0x248 [    9.653794]  phy_init+0x98/0x108 [    9.657046]  cdns_pcie_enable_phy+0xa0/0x170 [    9.661340]  cdns_pcie_init_phy+0x250/0x2b0 [    9.665546]  j721e_pcie_probe+0x4b8/0x798 [    9.669579]  platform_probe+0x8c/0x108 [    9.673350]  really_probe+0x114/0x630 [    9.677037]  __driver_probe_device+0x18c/0x220 [    9.681505]  driver_probe_device+0xac/0x150 [    9.685712]  __device_attach_driver+0xec/0x170 [    9.690178]  bus_for_each_drv+0xf0/0x158 [    9.694124]  __device_attach+0x184/0x210 [    9.698070]  device_initial_probe+0x14/0x20 [    9.702277]  bus_probe_device+0xec/0x100 [    9.706223]  deferred_probe_work_func+0x124/0x180 [    9.710951]  process_one_work+0x4b0/0xbc0 [    9.714983]  worker_thread+0x74/0x5d0 [    9.718668]  kthread+0x214/0x230 [    9.721919]  ret_from_fork+0x10/0x20 [    9.725520] [    9.727032] The buggy address belongs to the variable: [    9.732183]  clk_div_table+0x24/0x440

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.10-1 | [DEBIAN-CVE-2022-48803](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48803.md) | Jul 16, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.10-1 | [DEBIAN-CVE-2022-48803](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48803.md) | Jul 16, 2024 |
| Linux | linux Debian 14 | 5.16.10-1 | [DEBIAN-CVE-2022-48803](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48803.md) | Jul 16, 2024 |

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